一朝被蛇咬，十年怕草繩

　　Once bitten, twice shy.

　　一言既出，駟馬難追

　　A word spoken is past recalling.

　　一見鐘情

　　to fall in love at first sight

　　一箭雙鵰/一舉兩得

　　Kill two birds with one stone.

　　一寸光陰一寸金

　　Time is money.

　　一失足成千古恨

　　The error committed on impulse may turn out to be the sorrow of a whole life.

　　一將功名萬古枯

　　What millions died that Caesar might be great.

　　一年之計(jì)在于春，一日之計(jì)在于晨

　　Plan your year in spring and your day at dawn.

　　一人難稱百人意

　　You cannot please everyone.

　　一氣呵成

　　Never make two bites of a cherry.

　　筆記：

　　on impulse：一時(shí)沖動(dòng)，一時(shí)心血來潮

　　turn out：結(jié)果是， 證明是

　　一白遮三丑

　　A white complexion is powerful enough to hide seven faults.

　　一知半解

　　A little knowledge is a dangerous thing.

　　一心一意

　　John is a person who always works with undivided attention.

　　一丘之貉

　　These people are cut from the same cloth./are tarred with the same brush.

　　一目了然

　　His words just leapt to the eye. Do you need me to explain it?

　　一帆風(fēng)順

　　His business has gone off without a hitch.

　　一刻千金

　　You have to make good use of time. After all, every time counts.

　　一事無成

　　I am happy to know that all have ended in smoke about him.

　　一敗涂地

　　The outcome of the election just bit the dust.

　　一針見血

　　His comment on the current affairs always hits the right nail on the head.m.owmt.cn

　　筆記：

　　undivided attention：一心一意

　　go off：進(jìn)行，響起，入睡，變質(zhì)

　　without a hitch：順利無阻地(輕易地)

　　bit the dust：倒下死去(一敗涂地, 受辱)

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