Meaning: acetaldehyde

n.
a colorless volatile water-soluble liquid aldehyde used chiefly in manufacture of acetic acid and perfumes and drugs

eh Idiom, Proverb

a household name

"a name everyone knows; name of a famous person" Mario Lemieux, the hockey star, soon became a household name.

beauty is in the eye of the beholder

each person has a different idea of what is beautiful, one man's garbage... "To him, the statue is elegant; to me, it's ugly. Beauty is in the eye of the beholder!"

behind bars

in jail, in prison, in the slammer Behind bars, she didn't have much of a social life.

behind one

when one is absent or without one's knowledge, secretly He doesn't like people who talk behind his back.

behind the eight ball

behind schedule, not coping very well, not up to par I'm behind the eight ball in my computer course. I need to study and practise.

behind the scenes

out of sight, unnoticed, unsung hero This organization has many people who work behind the scenes helping us to succeed.

behind the times

old fashioned My aunt is a little behind the times.

behind your back

where you cannot see, when you are not here He says nice things to you, but criticizes you behind your back.

bonehead

an unusually dense or stupid person He is such a bonehead. He never understands what other people are trying to tell him.

don't make a mountain out of a molehill

do not cause a big fuss about a small problem So I scratched the car. Don't make a mountain out of a molehill.

dress rehearsal

the last rehearsal before the performance, dry run All actors must come to the dress rehearsal - our last practice.

drop behind

run further behind, lose ground Our party has dropped behind in the polls. We're in second place.

eh

you understand, you know what I am taking about There were three boys but only two girls, eh.

fall behind

be unable to run as fast, drop behind You will fall behind in your work if you miss a day of school.

figurehead

a person who calculates but does not control "Shamir is just a figurehead; if you want a decision, see Ali."

get behind

go slow while doing something, be late If you get behind in the homework you will never be able to pass the course.

get behind (a person or idea)

support, help They decided to get behind the main candidate when he promised to cut taxes.

household name

(See a household name)

jumping Jehosephat

holy cow, jimminy crickets, wow """Your VISA balance is $63,756."" ""Jumping Jehosephat! Is it?"""

knucklehead

one who does not think, doughhead What a knucklehead! He made the same mistake ten times.

leave behind

leave something somewhere I left my coat behind in the restaurant.

make a mountain out of a molehill

make a big problem out of a small one He is really making a mountain out of a molehill by worrying about his son

on behalf of

representing a group, acting for a group He presented the award to me on behalf of the community club.

stand behind

repair or replace, guarantee Our company stands behind its products. We offer a guarantee.

still wet behind the ears

still quite young, the tender age of When we moved to Boston, you were still wet behind the ears.

take off, eh

go, leave, beat it, buzz off, get lost "When he asked for my phone number, I said, ""Take off, eh."""

wet behind the ears

(See still wet behind the ears)

arseholed

very drunk

behind the eight-ball

in a difficult position, in a tight spot

boozehound

drunkard

bubblehead

an empty headed and stupid person

behind schedule

later or slower than planned or expected比计划（预料）要晚（慢）
The train was in an hour behind schedule．火车误点一小时到达。
They are behind schedule in building the library．他们建造这座图书馆的进度比预定的要慢。

behind the curtain

out of sight；secretly在幕后；秘密地
The treaty was signed behind the scenes．这项协议是秘密签订的。
The real work of the conference is being done behind the curtain．这次会议的实际工作正在幕后进行。

behind the scenes/curtain

behind time

late； after the stated time迟；在规定时间之后
The bus was twenty minutes behind time．汽车晚点20分钟。

go behind

1．search for寻究；推敲
If you go behind what he says，you'll find he's not really enthusiastic about the plan．只要你听他的弦外之音，你就会知道他对那个计划并不真正热心。
2．reexamine the grounds of进一步斟酌
The manager said that he was going to go behind the decision．经理说他要对这一决定进一步斟酌。

hang back/off/behind

1．hesitate犹豫
They hung back from committing themselves to the scheme until they knew more about it．在他们未了解更多的情况之前，对是否答应负责这个项目一直犹豫不决。
She hung back from asking the questions．她犹豫着没提出那些问题。
We wanted Fred to join the club，but he hung off．我们想让弗雷德参加俱乐部，可他犹豫不决。
2．stay some distance behind or away；be unwilling to move forward退缩；踌躇不前
The old lady offered the little girl candy，but she was shy and hung back．这位老妇人给那个女孩糖吃，但她却害羞而踌躇不前。
Most of us dashed quickly across the street，but two hung back．我们中大多数人很快地冲过大街，但有两个人却畏缩不前。
3．hold back抑制
The pupil is so reserved that he hangs back from many activities．那个学生太内向，许多活动都不参加。
4．restore to a hanging position挂回；挂着搁放
If you don't need the clothes，hang them back in the wardrobe．如果你不需要这些衣服，就挂回衣柜里去。

hang behind

stay in a place after others have left；lag behind别人离开后仍留在原处；落后
One or two of the audience hung behind after the lecture to have a word with the speaker．演讲结束以后，一两个听众仍迟迟不走，想和演讲者聊聊。
She was hanging behind，too shy to speak．她拖在后面，不好意思发言。1．hesitate犹豫
They hung back from committing themselves to the scheme until they knew more about it．在他们未了解更多的情况之前，对是否答应负责这个项目一直犹豫不决。
She hung back from asking the questions．她犹豫着没提出那些问题。
We wanted Fred to join the club，but he hung off．我们想让弗雷德参加俱乐部，可他犹豫不决。
2．stay some distance behind or away；be unwilling to move forward退缩；踌躇不前
The old lady offered the little girl candy，but she was shy and hung back．这位老妇人给那个女孩糖吃，但她却害羞而踌躇不前。
Most of us dashed quickly across the street，but two hung back．我们中大多数人很快地冲过大街，但有两个人却畏缩不前。
3．hold back抑制
The pupil is so reserved that he hangs back from many activities．那个学生太内向，许多活动都不参加。
4．restore to a hanging position挂回；挂着搁放
If you don't need the clothes，hang them back in the wardrobe．如果你不需要这些衣服，就挂回衣柜里去。

in sb．'s behalf

1．for；in the interest of；on account of因为
Don't be uneasy on my behalf．不要为我担心。
Thank you for all the trouble you have taken in my behalf．谢谢你为我解决问题所尽的努力。
Public sympathy was active in his behalf．公众对他深表同情。
2．as the representative代表
The chairman signed the document on behalf of the company．董事长代表公司签署了文件。

keep behind

make sb．remain after others are gone 留下
Jane was late home because she was kept behind at school to finish some work．简回家迟了，因为她被留在学校完成功课。

lag behind

fail to catch up with落后
The rest of the family had nearly reached the bank，but Jane was lagging behind．家里其他人都快要游到岸边，只有简落在后面。

lie behind

1．be the cause of；be the explanation for 是…理由
I'm not sure what lay behind his remarks．我不清楚他说这样的话的原因是什么。
2．have happened to；be in the past 先于…存在；已成过去
Some difficulties lie behind us，but greater ones lie ahead．有些困难已经过去，而更大的困难还在前面。
Behind lay nothing but defeat；ahead lay the certainty of victory．回顾过去，只有失败；展望未来，胜利在望。

on/in sb's behalf

on one's best ／good behavior

behaving right行为规矩
While his father was around，the boy was on his good behavior， but when the father left， the boy soon got into mischief．父亲在场时，这孩子规规矩矩，但父亲一走，他马上就调皮起来。
The naughty boy is on his best behavior today．今天这个调皮鬼表现很好。

on sb．'s behalf

somehow or other

1． by some means；in some way not yet known or stated以某种尚不知晓的方式
We must get the work finished somehow or other by tomorrow morning．无论如何我们要在明天早晨以前完成这项工作。
2． for some reason that is not clear 由于某种未弄清楚的原因
Somehow or other he again made a mistake in solving the mathematical problem．不知由于什么原因，他那个数学题又做错了。

stay behind

remain after other people have left留在后面；留下来不走
Several students stayed behind after the lecture to ask questions．有几个学生课后留下来问问题。

throw behind

delay延误
The heavy snow threw the train behind．那场大雪使火车误了点。

with one hand tied behind one's back

Idiom(s): with one hand tied behind one's back AND with both hands tied behind one's back

Theme: EASY

under a handicap; easily.
• I could put an end to this argument with one hand tied behind my back.
• John could do this job with both hands tied behind his back.

power behind the throne

Idiom(s): power behind the throne

Theme: CONTROL

the person who controls the person who is apparently in charge.
• Mr. Smith appears to run the shop, but his brother is the power behind the throne.
• They say that the vice president is the power behind the throne.