decide on . decide upon . make a choice or decision after consideration 经考虑后选定或决定

The committee has decided on the prizewinning students．委员会已经选定了获奖的学生。

Don't decide on important matters too quickly．重要的事情不要匆忙做决定。

They decided upon adjourning the session．他们决定休会。

As soon as they decided on the plan，they took action．他们一旦确定了计划就立即行动。

deck out . deck up . decorate；dress 装饰；打扮

She's all decked out and ready to go．她已打扮好，准备出门。

The park was decked up with banners and coloured lights．公园里装饰了旗帜和彩灯。

On the Spring Festival children are decked out in their finest clothes．春节孩子们都穿上了最漂亮的衣服。

declare off . make a formal announcement to break off；withdraw from a promise，etc．宣布取消；取消允诺等

Unfortunately，their engagement was declared off．很遗憾，他们的婚约已宣布解除。

What a pity they declared off the agreement they had come to only after great effort．太遗憾了，他们经过努力达成的协议被宣布无效。

The match was declared off．比赛取消了。

dedicate to . give oneself completely to 献身于

She dedicated her life to the cause of education．她把毕生的精力献给了教育事业。

He dedicated all his life to the liberation and prosperity of the Chinese nation．他把一生都献给了中华民族的解放和富强。

dedicate to . write in honour of 将书题献给

The writer dedicated the book to her father．作者谨以此书献给她父亲。

deduce from . arrive at（knowledge，a theory，etc．）by reasoning 推理；推想；演绎出（知识理论）

We can deduce the development of a culture from archaeological remains．我们可以根据古迹推断出一种文化的发展。

defer to . yield to；show respect towards 顺从；尊敬

I shall defer to your advice，which has always been helpful．我将遵从你的建议，它总是很有帮助。

We all defer to him in these matters．这类事情上我们都听他的意见。

deliberate on . deliberate over . deliberate upon . consider；think over carefully 仔细考虑

We are still deliberating over the matter．我们仍在仔细考虑这个问题。

We have deliberated on your proposal．我们对你的建议已经仔细考虑了。

delight in . take great pleasure in 喜爱；取乐

Mary delights in her new house．玛丽非常喜爱她的新居。

He always delights in doing good．他总喜欢做好事。

deliver over .deliver up .  hand over 移交

The former secretary delivered all the files over to his successor．前任秘书把所有的公文箱移交给他的接班人了。

He's delivering over the post now．他正在办理移交手续。

We delivered the thief over to the police．我们把小偷交给了警察。

The thief delivered himself up to the police．那个小偷向警察自首。

deny oneself . be unselfish in not having something 克己；自律；放弃

by denying herself，Mother gave the children a good education．母亲含辛茹苦，使孩子们受到良好的教育。

depart from . leave；die 离开；去世

The bus departs from Nanjing at 6：00 in the morning．汽车早上6点从南京开出。

His mother departed from life last month．他的母亲上个月去世了。

depart from . act in a different way from；deviate from 违反；不合；偏离

What she did departed from what she said．她做的与说的对不上号。

Your composition departed from the main theme．你的作文偏离主题。

They applied the new method which departed from the old one in many respects and achieved desirable results．他们采用了一种新方法，与旧方法在许多方面不一样，因而取得了预想的结果。

depend on . depend upon . rely on；rest upon 依靠；依赖

She depended entirely on her father．她完全靠她父亲。

His success depends chiefly on himself．他的成功主要靠他自己。

depend on . depend upon . vary according to；be influenced or decided by 视…而定

Whether the game will be played depends on the weather．比赛是否举行要视天气而定。

The development of things depends fundamentally on internal causes．事物的发展基本上是由内因决定的。

dependent on . dependent upon . depending on；relying on 依赖；依靠

Promotion is dependent upon your record of success．晋级的依据是你的业绩。

I am not dependent on my parents for money．我在经济上不依靠父母。

deprive of . cause to be without 剥夺；夺去

You can't deprive her of her rights．你不能剥夺她的权利。

The prisoner was deprived of the right to defend himself．那名囚徒被剥夺了为自己辩护的权利。

Many children are deprived of good education simply because they are born in remote villages．许多孩子没有受到良好的教育，只是因为他们出生在偏僻的乡村。

The failure deprived the physician of his popularity．失败使那位医生名誉扫地。

Lung cancer deprived him of his life．肺癌夺去了他的生命。