Gyrocopter
n. [空]旋翼機
? 同義詞
??? 情景例句
We'll find them.
我們會找到他們的。
Must be.
一定是。
where chance discoveries play a much larger part than they do in physical and mechancal industries.
同物理和機械工業相比，化學工業中偶然發現的機會要多得多。