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