deform(使)变形：Heat deforms plastic.

defy 公然违抗，反抗：He was going ahead defying all difficulties.

degenerate 衰退，堕落，变坏(into): Her eyesight degenerated with the years.

deliberate 慎重的，深思熟虑的：The government is taking deliberate action to lower prices.

delight 高兴，快乐：To the teacher’s great delight , all his students passed the examination.

deliver 投递，传送，运输：deliver the mail

demonstrate 论证，证明 ：demonstrate a philosophical principle

denote 表示，是。。。的标志，意思是：A frown often denotes displeasure.

dense 稠密的，密集的:a dense forest

deposit 存放： She deposited her bag in the cloakroom.

depress 使沮丧，使消沉：That movie depressed me.

deprive 剥夺，使丧失：deprive sb. of his property

derive 取得，得到：He derived his enthusiasm for literature from his father.

descend 下来，下降：Darkness descended too soon.

deserve 应得，值得：The question deserves consideration.

designate 指明，表明：designate boundaries

desolate 荒芜的，不毛的：desolate land

despise 蔑视，鄙视：He despises flattery.

detach 拆卸：They detached their trailer and set up camp.

detain 留住，担搁：be detained by business.

detect (当场)发现(某人在干坏事):detect a student cheating

deteriorate (使)恶化,(使)变坏,(使)退化: Relations between the two countries began to deteriorate.

deviate 背离，偏离：deviate from the rule

devote 将...献给(to):Mary devoted her life to caring for the sick.

diagnose 诊断，判断：The doctor diagnosed the illness as influenza.

dictate 口授，使听写：dictate a letter to a secretary

differentiate 使不同，使有差别，区分，区别：differentiate varieties of plants

diffuse 扩散(气体，液体等)：The colors of the sunset were diffused across the sky.

diminish 减少，降低：His illness diminished his strength.

diplomat 外交家，外交官，圆滑的人：a career diplomat

discard 丢弃，抛弃：discard an old pair of shoes