1. distinct from 与截然不同
inguish between 辨别
把与区别开
away with 除去,废除,取消; do away with 杀掉,镇压
do with 与有关系
out doubt 无可置疑地
doubt 对表示疑惑
due to 是由于
off duty 下班
on duty 上班
on duty 值班,值日,在上班时
in duty bound to 有义务
eager for 想得到,盼望
ear 凭记忆,不看乐谱
an ear for 对有鉴赏力
16.a word in ones ear 私房话,秘密话
earth究竟,到底,全然
ease 容易,不费力
ease 自在,不拘束
sb. at his / her ease 使某人感到无拘束