It may effectively reduce the HC emissions to use a catalyst with low light-off temperature, close-coupled catalyst, HC traps, second air injection and electrically heated catalyst.

采用如低起燃温度催化剂、密耦催化剂、HC捕集器、二次空气注入和电加热催化剂等在内的排气后处理技术，可以有效地减少污染物尤其是HC的排放。

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Wire the thermometers up to trigger off an alarm bell if the temperature drops.

把温度计的电线连接上，当温度下降时，就会触发警报。

《柯林斯英汉双解大词典》

All bodies, no matter what their temperature, give off radiation in the form of electromagnetic waves.

一切物体，不论其温度高低，均要放出电磁波形式的辐射。

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Enzymes work best, enzymes are proteins that catalyze chemical reactions and our bodies operate by elaborate networks of chemical reactions, When we're off from that temperature then they don't work properly.

举酶这个例子再好不过,酶是一种具有催化作用的蛋白质,人体依靠精密复杂的化学反应网络来运转,如果我们体温与之相差较大,这些酶就不能正常工作

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You can read her feelings off her face as easily as you can the temperature off a king-size thermometer.

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According to the National Oceanographic Data Center, the water temperature off San Francisco was 49.3 degrees Fahrenheit (9.6 C).

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Modern mattresses and bedclothes trap the heat that the body gives off as its core temperature drops each night.

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