Antiderivative
[机] 反式衍生物
🗣️ 情景例句
I estimate his age to be about 30.
我估计他的年龄大约30岁。
He is feeling the surface.
他在触摸着表面。
A man was walking through a wood and he came across a woodcutter.
一个人正步行穿过一片树林，他遇见一个伐木工人。