be in out of use 成语
a full house (cards)
a pair plus three of a kind, e.g., 2 kings and 3 aces In our last game of poker, you dealt me a full house.
a grandfather clause
a written statement that protects a senior worker They can't demote him because he has a grandfather clause.
a household name
"a name everyone knows; name of a famous person" Mario Lemieux, the hockey star, soon became a household name.
a lost cause
a goal or project that is not worth working for That video store is a lost cause. It has never made a profit.
an offer I couldn't refuse
an offer that contains a threat or force, a request that is a command The border guards invited me to stay for further questioning - it was an offer I couldn't refuse.
as poor as a church mouse
very poor, having little, the wolf is at the door How can they refuse to help her? She's as poor as a church mouse.
as useless as a fifth wheel
not useful, not needed, redundant, (four wheels are sufficient) I sat there watching the four of them play bridge, and feeling as useless as a fifth wheel.
as useless as tits on a boar
not useful, not necessary, having no function Our toenails are useless - as useless as tits on a boar.
be used to (+Ving/noun)
" be accustomed to; not uncomfortable with."
bring the house down
cause much laughter in the audience The comedian brought the house down with his jokes about the lost dog.