On campus
辅助 Assistant在校内
🧩 词语组成解析
on
[ɑn]
prep. （表示方向）向;（表示对象）对;（表示位置）在…上;（表示时间）在…之时;
adv. （放，穿，连接）上;向前，（继续）下去;
adj. 活动着的情况，状态;使用着的;发生着的;计划中的;
🗣️ 情景例句
No charge for the cleanup.
清洗不用付费。
I have no idea what they're going to say, so I'll have to play it by ear.
我一点不知道他们将会说些什么，所以我只好见机行事。
but as the oceans have been overfished, fish has become more and more expensive.
但是随着海洋里的滥捕滥捞，鱼已经变得越来越昂贵。