Breechblock
n. 炮闩, 闩体, 尾栓
🗣️ 情景例句
He's seeing other women on the side
他偷偷的和别的女人有染。
You are welcome.
不客气。
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。