Hot weather also increases dangers for people who must take medicine for high blood pressure,poor blood flow, nervousness or depression.

VOA: special.2010.07.27

They move from regions of high concentration to regions of low concentration by this natural flow down a concentration gradient.

从高浓度区域,向低浓度区域流动,顺浓度梯度流动

耶鲁公开课 - 生物医学工程探索课程节选

The study found the most effective treatment was high doses of high-flow oxygen.

VOA: standard.2009.12.17

He expressed reluctance to comment on American domestic affairs, but suggested that a renewal of the now-expired U.S.ban on assault weapons would be helpful in curbing the flow of high-powered armaments to Mexican drug cartels.

VOA: standard.2009.04.12