经济学人下载:黑帮的经商之道?毒品交易泛滥

例句:We walked home along the banks of the Tiber, fleet-footed, light-hearted, trailing clouds of glory.
我们沿着台伯河岸一路走回家，脚步轻盈，无忧无虑，满怀喜悦。 

2.drug trade 贩毒；毒品交易

例句:I have never engaged in the drug trade.
我从未参与过毒品交易。

3.paid off 付清；见成效

例句:Sandra was determined to become a doctor and her persistence paid off.
桑德拉决心成为医生，她的坚持取得了成功。

4.As well as 和...一样；也

例句:They visited some factories, hospitals as well as the school.
他们参观了这所学校，还参观了工厂和医院