Methide
甲基化物
🗣️ 情景例句
I need some good photos for my advertising, Mr. Stewart.
我做广告需要一些好照片， Stewart先生。
There is something in what she said.
她说的话里有些重要的东西。
The clouds had come down so suddenly we had no warning.
乌云突然出现，我们丝毫没有觉察。