Pipelaying
n. 铺设水管之工程, 为达到某种目的之计划
🗣️ 情景例句
going to the children's ward once or twice a week
每星期就去小儿科病房一、两次
When am I supposed to check in?
我应该在什么时候到机场办理手续呢？
He did not know from which part of Africa his ancestor had come.
他不知道祖先来自非洲的什么地方。