三思而后行

　　Look before you leap.

　　三句不離本行

　　to talk shop

　　三個臭皮匠勝過一個諸葛亮

　　Two heads are better than one.

　　三番兩次

　　This guy is at me time after time.(time and again; time and time again.)

　　三緘其口

　　You’d better hold your peace, or you’ll ask for trouble.

　　千鈞一發(fā)

　　to hang by a hair thread / at the critical time

　　千錘百煉

　　A good nail does not fear the hammer. (steeled and tempered; gone through fire and water)

　　千載難逢

　　It only happens once in a blue moon. (It chances in an hour that happens not in seven years.)

　　千變?nèi)f化

　　The unexpected always happens.

　　大刀闊斧

　　It’s said that the new executive will go the whole hog (reform in a big way.)

　　【筆記】at me：找我茬

　　ask for：要，要求，找

　　chance：偶然發(fā)生，碰巧，冒 ... (的險)

　　大同小異

　　much of muchness：The two articles are much of muchness ( be alike with minor difference ; There’s not a pin to choose between the two ) in appearance and quality.

　　大言不慚

　　blow your own trumpet：You really blow your own trumpet. (talk big; overshoot oneself)

　　大快朵頤

　　They are so delicious that I ate my fill. (gorge oneself; tuck in at; have/take one’s fill.)

　　大功告成

　　The big project finally came off with honors (bring home the bacon; come through with flying colors).

　　大智若愚

　　He who cannot play the fool is not a wise man.

　　大器晚成

　　Rome was not built in a day.

　　大海撈針

　　needle in a haystack：Finding your lost contact lens is just like looking for a needle in a haystack.

　　山窮水盡

　　at the end of one’s resources

　　山中無老虎，猴子稱大王

　　Among the blind the one-eyed is king./When the cat’s away, the mice will pay.

　　小題大做

　　Make a mountain out of a molehill. ( fuss about trifles; a tempest in a teapot; a storm in a teacup; break a butterfly on a wheel )

　　【筆記】much of a muchness：大同小異very much the same

　　tuck：<俚>大吃，通常后面接away/in

　　come off：實(shí)現(xiàn)，發(fā)生

　　bring home the bacon：成功，也有養(yǎng)家糊口，謀生的意思

　　play the fool：干蠢事，演滑稽角色

　　contact lens：隱形眼鏡