Substruction
n. 基础, 下部结构, 下层建筑, 路基
🗣️ 情景例句
Have a nice flight.
祝您一路顺风。
Well, it's too bad that you have to go.
哦，真遗憾，你一定要走。
Pardon? Would you please say that again more slowly?
对不起，请你慢点儿再说一遍好吗？