Lactam
n. [化] 内酰胺, 乳胺
🗣️ 情景例句
You haven't changed much in fifty years.
你五十年来没有什么变。
A plant may produce new flowers; man is young but once.
花有重开日，人无再少年。
Sometimes were go upstream to a favourite backwater, sometimes we have our party at the boathouse,
有时，我们溯流而上来到我们喜爱的回水河汊举办；有时在船坞举办。