Don't speak all you know, but know all you speak.不要尽言所知，而要尽知所言.

Don't throw out your dirty water before you get in fresh.清水未打来，赃水莫倒掉.

Don't trouble trouble until trouble troubles you.不要自寻烦恼.

Don't try to teach your grandmother to suck eggs.不要班门弄斧。

Don't whistle until you are out of the wood.没有脱离险境，不要过早高兴.

Dot the i's and cross the t's.一点一划，循规蹈矩.

Doubt is the key of knowledge.怀疑乃知识的钥匙.

Downy lips make thoughtless slips.嘴上没毛，办事不牢.

Draw not your bow till your arrow is fixed¹.事未齐备，切莫妄动.

Draw water with a sieve².竹篮子打水一场空.

Dreams go by contraries.梦想总与现实相反.

Drive your business, do not let it drive you.要推动事业，不要让事业来推动你.

Drop by drop the oceans are filled; stone by stone the walls are built.滴水汇大海，垒石诛高墙.

Drowning man will catch at a straw.溺水的人一根草也要抓.

Drumming is not the way to catch a hare.空话连篇于事无补.

Drunken days have all their tomorrows.今日花天酒地，明日潦倒穷途.

Drunkenness reveals what soberness conceals³.酒后露真言.

Dumb dogs are dangerous.哑犬最凶恶.

Dying is as natural as living.死亡与生存一样自然.

Each bird love to hear himself sing.孤芳自赏。

Each bird loves to hear himself sing.鸟儿都爱听自己唱歌.

Each day brings its own bread.天无绝人之路.

Eagles catch no flies.大人物不计较小事情.

Eagles fly alone, but sheep flock together.鹰单飞，羊群集.

Early mistakes are the seeds of future trouble.早期的错误可以酿成日后的麻烦.

Early sow, early mow⁴.播种早的收获早.

Early start makes easy stages.早开始是成功的保证.