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．(be) distinct from ( = be different from) 与……截然不同
202．distinguish between (=make or recognize differences) 辨别
203．distinguish……from 把……与……区别开
204．do away with (=get rid of; abolish; discard eliminate ) 除去，废除，取消； do away with (=kill) 杀掉，镇压
205．have……to do with 与……有关系
206．without doubt (=undoubtedly) 无可置疑地
207．in doubt (=in a condition of uncertainty ) 对……表示疑惑
208．be due to 是由于
209．come off duty 下班
210．go on duty 上班
