191.on a diet 吃某种特殊饮食，节食
192.differ from……in 与……的区别于……
193.in difficulties…… 有困难，处境困难，
194.discharge sb. (from)……for (=dismiss sb. from a job for) 因……解雇，开除
195.fall back (=retreat， turn back) 撤退;in disorder慌乱地，狼狈不堪
196.on display (=being shown publicly) 陈列
197.dispose of (=get rid of， throw away) 处理掉
198.beyond dispute 不容争议的，无可争议
199.in dispute 在争议中
200.in the distance 在远处。make out 辩认出
201.have……to do with 与……有关系
202.without doubt (=undoubtedly) 无可置疑地
204.(be) distinct from ( = be different from) 与……截然不同
205.distinguish between (=make or recognize differences) 辨别
206.distinguish……from 把……与……区别开
207.do away with (=get rid of; abolish; discard eliminate ) 除去，废除，取消; do away with (=kill) 杀掉，镇压
208.be due to 是由于
209.come off duty 下班
210.go on duty 上班