Aerotex
甲醛, 三嗪聚合物
🗣️ 情景例句
it's exactly as it was when we were married!
它跟我们结婚的时候一模一样！
In college I majored in history, What was you major?
大学时我主修历史，你主修什么呢？
We could have a walk around. Let's go out at about six o'clock, shall we?
我们可以四处走走。咱们大约6点出发，行吗？