Sleep apnea not only reduces sleep quality and makes people feel tired during the day.

VOA: special.2011.05.04

These are the only countries that I've been able to find that have high-quality, repeat sales price indexes going back a hundred years.

只有这三个国家,在100年前就已经出现,优质的重复销售价格指数

耶鲁公开课 - 金融市场课程节选

Experts say she is remembered not only for the quality of her voice, but also because of the way she carried out her right to be heard.

VOA: special.2009.01.25

Batik-maker Daliyem says she could only afford low-quality material typically used to wrap bodies before burial.

VOA: standard.2010.04.14

"I am not worried about quality at all. Because again I count on not only on the regulatory agencies that determine the quality of the water in which these products are grown.

VOA: standard.2010.05.08

"We have a moral imperative to do this. We are the greatest country that ever existed in the history of the world, the great economic leader of the developed world, but the only one that does have access to quality, affordable health care for our people, and we intend to do so,".

VOA: standard.2009.09.04