Federal Reserve Chairman Alan Greenspan, who highlighted another long-term risk to America's economic health: its skyrocketing national debt.

VOA: standard.2010.02.07

The tobacco history is extremely interesting and relevant here The tobacco industry in countries like China saw the potential as well, and hence, smoking rates like rates of obesity have been skyrocketing in China and in countries such as Indonesia, Botswana, and Uruguay.

烟草的历史十分有趣,与我们这里讲的内容相关,像中国这样国家的烟草工业,也发现了这种潜在情况,因而,吸烟率就好像肥胖率那样,在中国,印度尼西亚,博茨瓦纳,乌拉圭这些国家中直线上升

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Asian-American parents' traditional emphasis on education has run into the stumbling U.S.economy and skyrocketing college costs.

VOA: standard.2010.07.14

At the same time, skyrocketing rates of kidney failure, caused by diseases such as diabetes and hypertension, make it urgent to offer more - and more sophisticated - transplants.

VOA: standard.2010.05.30