short-change

['ʃɔ:t.tʃeindʒ]

vt. (给顾客)少找钱, 少付

例句与用法：

I am able to pick you up on the short wave radio.

我能用短波收音机收听到你的信号。

I was able to pick you up on the short wave radio.

我能用短波收音机收听到你的信号。