Co-operator
n. 合作者；合作社社员
📖 牛津释义
co-operator
n.
🧩 词语组成解析
[医] 钴(27号元素)
🗣️ 情景例句
Why does he want to do that?
为什么他要那么做呢？
Yes, I am.
是，我是。
For the first time in his life, he became the proud owner of a bed which had springs and a mattress.
他平生第一次自豪地拥有了一张既有弹簧又带床垫的床。