Subexpression
[计] 子表达式
🗣️ 情景例句
Have gone to the railroad station.
去火车站。
Would you let me know your fax number?
可以告诉我您的传真机号码吗？
of a change of atmosphere, of a diversion of effort, is essential.
改变一下气氛，转移一下注意力，这是不可缺少的。