Underpinning
n. 基础材料, 支承结构
✅ 同义词
🗣️ 情景例句
Let's get hitched.
我们结婚吧。
Misfortunes tell us what fortune is.
经过灾难方知福。
I was not surprised to find that the machine still refused to work after I had reassembled it,
等我装完后，那台割草机仍然一动不动，对此我倒并不感到吃惊。