Variable function
[计] 可变函数
🧩 词语组成解析
🗣️ 情景例句
We'll open a letter of credit if you promise to effect shipment one month earlier.
如果你方答应提前一个月交货，我们就同意开信用证。
He has the advantage of a new set of clubs and has played everyday.
他拥有新的球杆，所以有利，何况他每天都在练习。
No, that's not mine.
不，那不是我的。