Lactam
n. [化] 内酰胺, 乳胺
🗣️ 情景例句
I understand you used to be in the construction business,
听说你过去从事建筑业
You ain't seen nothing yet!
好戏还在后头呢！
The pirates would often bury gold in the cave and then fail to collect it.
海盗们过去常把金子埋藏在那个洞里，可后来却没能取走。