Gonotreme
生殖口
🗣️ 情景例句
It was nothing.
没什么的。
I will take a bus.
我将去搭公共汽车。
where chance discoveries play a much larger part than they do in physical and mechancal industries.
同物理和机械工业相比，化学工业中偶然发现的机会要多得多。