577. Don't put off till tomorrow what should be done today.
今日事，今日畢。
578. Don't speak all you know, but know all you speak.
不要盡言所知，而要盡知所言。
579. Don't teach your grandmother to suck eggs.
休要班門弄斧。
580. Don't throw out your dirty water before you get in fresh.
清水未打來，贓水莫倒掉。
581. Don't trouble, trouble until trouble troubles you.
不要自尋煩惱。
582. Don't whistle until you are out of the wood.
沒有脫離險境，不要過早高興。
583. Do one's level best.
盡力而為。
584. Dot the i's and cross the t's.
一點一划，循規蹈 。
585. Doubt is the key of knowledge.
懷疑乃知識的鑰匙。
586. Do well is better than say well.
說得好不如做得好。
587. Downy lips make thoughtless slips.
嘴上沒毛，辦事不牢。
588. Draw not your bow till your arrow is fixed.
事未齊備，切莫妄動。
589. Draw water with a sieve.
竹籃子打水一場空。
590. Dreams go by contraries.
夢想總與現實相反。
591. Drive your business, do not let it drive you.
要推動事業，不要讓事業來推動你。
592. Drop by drop the oceans are filled; stone by stone the walls are built.
滴水匯大海，壘石築高牆。
593. Drowning man will catch at a straw.
溺水的人一根草也要抓。
594. Drunken days have all their tomorrows.
今日花天酒地，明日潦倒窮途。
595. Drunkenness reveals what soberness conceals.
酒後露真言。
596. Dumb dogs are dangerous.
啞犬最凶惡。
597. Dying is as natural as living.
死亡與生存一樣自然。
Diamond cuts diamond.
強中自有強中手。
Do as the Romans do.
入鄉隨俗。
Do as you would be done by.
己所不欲，勿施于人。
Doing is better than saying.
與其掛在嘴上，不如落實在行動上。
Do it now.
機不可失，時不再來。
Do nothing by halves.
凡事不可半途而廢。
Don’t claim to know what you don’t know.
不要不懂裝懂。
Don’t have too many irons in the fire.
不要攬事過多。
Don’t make a mountain out of a molehill.
不要
小題大做。
Don’t put off till tomorrow what should be done today.
今日事，今日畢。
Don’t put the cart before the horse.
不要本末倒置。
Don’t trouble trouble until trouble troubles you.
不要自找麻煩。
Don’t try to teach your grandmother to suck eggs.
不要班門弄斧。
Do well and have well.
善有善報。
