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
