n.条约,协议,协商,谈判
They will have to pay much more when rents treble in January.
一月份房租增加两倍时,他们将被迫多付不少钱。
More than 7 million shares changed hands, treble the normal daily average.
有700多万股换手,是通常日平均成交量的3倍。
to turn up the treble on the stereo
把立体声唱机的高音音量调大