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

discern 看出，觉察出：We could discern from his appearance that he was upset.

disclose 揭露，透露，使公开：disclose information to sb.

discharge 释放：The judge found him not guilty and discharged him.

discount 把(价格，费用等)打折扣，削价出售：The store discounts 3 per cent on all bills paid when due.

discriminate 区别，辨别：It’s difficult to discriminate between the twin brothers.

disgrace 丢脸，耻辱：bring disgrace on oneself

disgust 厌恶，恶心：feel disgust for bad odors

disperse 分散，驱散，散去：Police dispersed the rioters with tear gas

displace 移动。。。的位置：Many of the inhabitants were displaced by the rising floodwaters

dispose 布置，整理:The stores disposed the jewellery in an attractive display

disregard 不理会，不顾：Disregard the noise and keep working

distinct 有区别的，不同的：Three distinct types of people

distort 扭歪，扭曲：a face distorted by (或with)pain