adj.三倍的；最高音部的；三重的

v.（使）成三倍

n.三倍；最高音部

The chairman has already indicated his aim for the club this season and wants nothing less than the treble. 主席有已經為俱樂部這季節(jié)和需要無指出他的目標少于那最高音部。

There was a treble knock at the door. 有人在門上敲了三下。

He has treble his income during the last few years. 在過去幾年中他的收入已增加了兩倍。

Profits in our company have trebled in the last two years. 我們公司的利潤在這兩年中增長成以前的三倍。

The house is worth treble what they paid for it. 這房子值他們所付價錢的三倍。

He sings treble. 他唱最高音部。