subtracts的音标：...

The positive - going signal subtracts from the forward bias of the lower transistor.正向信号则使它的正向偏压减弱.Significant comorbidity such as ischemic heart disease and stroke subtracts 2 points.像缺血性心脏病和中风等明显合并症者也要减去2分.A businessma...

v.减，扣除，做减法( subtract的第三人称单数 )...