Deferentiality
可微分性
🗣️ 情景例句
They're real watches. They tell you the time, don't they?
当然是"真的表"罗。会走也会报时，不是吗？
Do you want to airmail it or not?
你想发航空信吗？
Thank you very much. I'll return it as soon as I can.
非常感谢。我会尽快归还的。