adj. 合作的;协助的;共同的;〈美〉(大学文科)有关[包含]各种实习活动的;
n. 合作社,联合体;
co共同+oper操作+ative形容词后缀,…的→合作的,协作的,[转为名词] 合作社
🗣️ 情景例句
I'm a freelance photographer.
我是自由摄影师。
Excuse me! I'm sorry I startled you!
对不起!很抱歉,让你受惊了!
If you want to send a letter to an office abroad that is in a different time zone, you can send a fax, and it will be received even though the office is not open.