Derivativeness
可微商性, 可微商情况
🗣️ 情景例句
she'll help me find another dog.
她会帮我另外找一只狗。
It's up to us to help those in need.
我们有责任帮助那些有困难的人。
Money is no more than our servant.
金钱不过是我们的仆人。