Mutual principles
交换条件
🧩 词语组成解析
n. 原则, 原理, 道义, 节操
🗣️ 情景例句
We all need one of those.
我们都需要一个这样的领结。
Which train do I take to Philadelphia?
去费城乘哪趟车？
I'm afraid that he'll forget it if he misses so many lessons. He may even fail his Chinese exam.
如果他再缺这么多课，恐怕他会忘记很多的。他的汉语考试甚至会不及格。