Northern winter indoor heating can be the normal construction, if the temperature does not guarantee a good idea to test a small area.

北方冬季室内有暖气可正常施工，如果温度不能保证，最好先进行小面积试验。

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A small area of Riau's remaining forest will become a test case if an international carbon-trading plan called REDD is adopted.

如果一项名为REDD的国际“碳交易”计划被采纳，廖内省境内的一小块残存的原始林将成为为其首块试验林。

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Try it on a small test area first to make sure it will not be irritating.

先把它敷在一小块儿地方，看是不是刺激皮肤。

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Some experts say one way to tell if a person is a supertaster is to count the number of papillae in a small area after dying the tongue with food coloring, a test that can be done at home.

WSJ: People Who Taste Too Much