1.do business 经商，做买卖，做生意
例句：You will stand to lose if you do business with him.
跟他作生意你是要吃亏的om4!Lx4V[!Rp=b=(cL~h。
2.motor vehicles 机动车辆
例句：In urban areas motor vehicles are a major source of PAHs.
在城市地区机动车辆是多环芳烃的主要来源n%SMTjpVReT)。