来自南加州大学的希瑟•威普弗利和乔纳森•沙美对发表在《柳叶刀》杂志上的这一研究报告做了评论。他们说，决策者试图对家庭实施激励手段，阻止在家中吸烟的行为。
Commenting on the findings in the Lancet journal, Heather Wipfli and Jonathan Samet from the University of Southern California said policymakers try to motivate families to stop smoking in the home.
南加州大学（the University of Southern California）的最新调查显示，在美就读的中国本科生有近三分之二是通过留学中介录取的。
According to a recent study done at the University of Southern California, nearly two thirds of current undergraduates from China studying in the U.S. used an application consultant to gain admission.
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