Understructure
n. 基础, 下层结构
🗣️ 情景例句
Good-bye, Susan.
再见， Susan。
We would also want you to cover insurance and the cost of transporting the goods to the port.
我们也要贵方负责保险以及把货物运到港口的费用。
The work is coming along quite well.
工作进展得相当顺利。