Understructure
n. 基础, 下层结构
🗣️ 情景例句
They live from hand to mouth.
他们过着糊口的生活。
I'm very sorry. Can I get you another one?
非常抱歉。能不能另外给你买一条呢？
You'd better take a hat.
你最好戴上帽子。