Derivator
[计] 微分器
🗣️ 情景例句
No. I never could, either.
不会 ，我也一直都不会。
Every brave man is a man of his word.
勇敢的人都是信守诺言的人。
One does not have to go outside for amusement, since the collection is housed at home.
人们不必走到户外去寻求娱乐，因为收藏品都是存放在家中。