Significato:
a bolt from the blue 
un fulmine a ciel sereno, un evento improvviso che lascia di sconcerto
lu Idioma
a clutch hitter (baseball)
a batter who hits when runners are on base Joe's a clutch hitter. He's batting .431 with runners on base.
a foregone conclusion
a certain conclusion, a predictable result That he'll graduate is a foregone conclusion. He is a good student.
a lucky break
good luck, good fortune, stroke of good luck Finding that money was a lucky break. It was our good fortune.
a lucky streak
winning several times in succession Whenever I wear this ring, I have a lucky streak. I win every game!
a slug
a group, a bunch A slug of bats hung from a rock jutting out of the cave's ceiling.
air was blue
(See the air was blue)
as luck would have it
as luck is sometimes good and sometimes bad By the time we arrived, as luck would have it, the fight was over.
at face value
the value shown by the surface, what you see At face value, this car appears to be in good condition.
at first blush
when first seen, without careful study At first blush he seemed like a good worker but later we had many problems with him.
baby blues
feeling sad when you are pregnant After seven months, Karly had the baby blues. She was feeling sad.
between the devil and the deep blue sea
in a difficult position, no place to go, between a rock..., Sophie's choice "If he ran, they would shoot him; if he stayed in the shop, the gas would kill him. He was between the devil and the deep blue sea."
blue
sad, depressed, down, low """Are you blue, Dear?"" ""Yes. Jack left me."""
blue-collar worker
someone who works at a trade, e.g., a plumber The blue-collar workers will vote for Ed. He's a tradesman.
blue in the face
weakened, tired after trying many times I called that dog until I'm blue in the face. He won't come in.
blue sky
great opportunity, easy life, smooth sailing We made T-shirts, and people loved them - it was blue sky!
blurt out
say without thinking, reply quickly """I did it!"" the boy blurted out, and he began to cry."
bolt from the blue
(See like a bolt from the blue)
call his bluff
challenge his story, give it to me straight, put up or shut up When I called his bluff about low profits, he admitted that the company made 11 million.
clued in
aware, in the know, with it """How do you get clued in?"" ""You watch and listen, man."""
clueless
not informed, ignorant, not with it When I don't know the answer, I try not to look clueless.
clunker
a car that is in poor condition, a beater Uncle Blair has bought another clunker - an old Pontiac.
clutch hitter (baseball)
(See a clutch hitter)
clutz
a clumsy person, one who makes careless mistakes What a clutz I am! I poured sugar in the salt shaker!
come unglued
lose control, fall apart If Tina doesn't stop worrying, she'll come unglued.
cry the blues
complain because your friend or lover has gone Lan is crying the blues because Bing left her for another woman.
darn my luck
my luck is poor, I am unlucky today My bread is in the oven and the power goes off. Darn my luck!
do lunch
have lunch together, eat lunch We'll do lunch tomorrow, OK? Do you like salads?
don't push your luck
do not try to get too much, do not ask for more If Mom says maybe, don't push your luck. Be patient.
down on his luck
not lucky lately, not happy or positive With no money and no job, Ragnar was down on his luck.
face value
seeming value or truth of something He is a nice person but you must always take at face value what he says.
feel blue
feel sad and depressed.
filthy lucre
money, dollars Filthy lucre - that's what people want - cash, moola, lettuce.
flunk out
fail a school program, fail a course If you flunk out of college, you will have to find a job.
foregone conclusion
(See a foregone conclusion)
give up the blueline (hockey)
let opponents cross the blueline before you check them If we give up the blueline, they will get more shots on goal
glued to the set
watching TV, interested in a TV show Jack loves sports. He's glued to the set every Saturday.
got the blues
feel sad, feel blue Zora's got the blues because her lover was untrue.
have a clue
know about the answer, know about the topic I didn't have a clue about the answer to Question 2.
highfalutin
proud, pretentious We need a musician, not some highfalutin rock star!
in a flutter
(See in a tizzy)
in a slump
not performing well for several days Wayne's in a slump. He hasn't scored a point in four games.
in luck
having good luck, finding something good by chance I think that we are in luck. I have found two tickets for the concert.
in the lap of luxury
living in comfort, living high on the hog If I win the lottery, we'll be rich. We'll live in the lap of luxury.
in the lurch
facing a problem alone, holding the bag True friends won't leave you in the lurch, will they?
jump to conclusions
form conclusions before you have all the facts, jump the gun If you see a wrecked car and say that the driver was drunk, you are jumping to conclusions.
lap of luxury
(See the lap of luxury)
lay the lumber
hit with a hockey stick, slash with a hockey stick The losing team started to lay the lumber on our best players.
leave in the lurch
desert or leave alone and in trouble, refuse to help or support someone He left me in the lurch when he didn
leave you in the lurch
leave you with a problem, fend for yourself The bride didn't go to the church. The groom was left in the lurch.
left in the lurch
(See leave you in the lurch)