The Kansas State University study, however, may show a way that reduces risk for people who grill on high heat.

VOA: special.2010.06.01

The heater is on, it's producing heat until a negative signal is registered, 'oh we've gone too high', and then it turns off.

加热器会开着,一直产生热量直到它得到一个关闭的信号,噢我们弄得太热了,然后就关闭了

耶鲁公开课 - 生物医学工程探索课程节选

Men who worked at night on the dam suffered less, but the heat was still as high as thirty degrees Celsius.

VOA: special.2009.08.12

The causes of heat stress include wearing heavy clothing, physical work or exercise, hot weather and high humidity.

VOA: special.2011.08.09

Then high levels of heat harden it to produce many kinds of ceramics.

VOA: special.2009.09.09

MAN ON TV. ; You add a little bit of olive oilto a non-stick saute pan, and you want to cookwith the olive oil in medium-high heat.

VOA: standard.other