Derivator
[计] 微分器
🗣️ 情景例句
I like him the way he was.
我喜欢他过去的样子。
A standard one. Replacement during the first year if all rules for proper use have been followed.
有一个原则，如果在一年内符合各种使用规定，就可更换。
You must look after it. Give it to Mr. Hu.
你一定要好好保管啊！让胡老师帮你拿着。