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1·According to the Michigan study, the share of 18-year-olds who believe that using crystal meth even once or twice carries a great risk has risen every year since 2003.

密歇根大学的研究显示，2003年以来18岁上下的这一群体中有越来越多的青少年认为即使仅吸食了一两次冰毒也是有巨大成瘾危险的。

2·His words contrast with Andre Agassi's claims in his recent autobiography that, despite winning eight grand slams, he hated tennis and sought refuge in crystal meth.

他的话与安德烈·阿加西在最近的自传中的说法产生明显对比。阿加西尽管拿下8个大满贯冠军，但他“恨网球”，并向冰毒寻求庇护。