1.object to 近义词: be opposed to 反对
2.objection to (接动名词) 反对
3.observe sb do/doing sth 看到某人做某事
4.obstruct sb in/from 阻挠某人做…
5.on occasion 近义词: now and then 不时地,必要时
6.by occasion of 近义词: because of 由于
7.sb occupy oneself in 某人正忙于(做)…
8.sb be occupied in doing/with sth 某人正忙于(做)…
9.occur to sb 某人想到…
10.It occurred to sb to do/that 从句 某人想到…
11.of all (用于名词前,表吃惊)竟然,偏偏
12.off and on 间歇地
13.off duty 下班
14.be better duty 经济较宽裕
15.be off for sth 有一定数量的东西
16.give offence to 触视
17.take offence at 因某事而生气
18.be offend by/with sb at/for sth 因某事对某人生气
19.offend against 违背
比较
offer sth to sb
offer sb for sth
provide sth for sb
provide sb with sth
supply sth to sb
supply sb with sth 为某人提供某物
20.on (the) one hand 一方面
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