Diligence is the mother of good fortune

Diligence is the mother of good fortune.
勤奋会带来好运；勤勉为成功之本。

The die is cast

The die is cast.
骰子已经掷出；木已成舟。

Dicing, drabbing, and drinking are the three D's to destruction

Dicing, drabbing, and drinking are the three D's to destruction.
赌博、嫖妓、酗酒，是三个毁人的魔鬼。

Diamond cut diamond

Diamond cut diamond.
硬碰硬；势均力敌；龙争虎斗。

Dexterity comes by experience

Dexterity comes by experience.
熟能生巧。

或者说：Skill comes with experience.

The devil take the hindmost

The devil take the hindmost.
魔鬼抓去最后的人；落后者倒楣。

The devil lurks behind the cross

The devil lurks behind the cross.
魔鬼会躲在十字架后面。

The devil is in the dice

The devil is in the dice.
骰子里有魔鬼。

The devil dances in an empty pocket

The devil dances in an empty pocket.
魔鬼总在空口袋里跳舞；人一缺钱就起坏心。

The devil can cite Scripture for his purpose

The devil can cite Scripture for his purpose.
魔鬼能引用圣经来达到目的。

The devil always leaves a stink behind him

The devil always leaves a stink behind him.
魔鬼离开后总留余臭。

Destroy the lion while he is yet but a whelp

Destroy the lion while he is yet but a whelp.
杀狮要趁其还幼小；需防患于未然。

Desperate diseases must have desperate remedies

Desperate diseases must have desperate remedies.
绝症必须用非常的疗法；沉痾用猛药。