Derivativeness
可微商性, 可微商情况
🗣️ 情景例句
This is meant to happen.
这件事注定要发生。
So he keeps on studying after his English classes in order to prepare for life in America.
所以他在英语课下课后还继续学习，为以后在美国生活做准备。
Thank you .It was very nice of you to help me.
谢谢你帮我，你真好。