南北回归线
南北回归线-
地球表面位于南北回归线之间的地带；以炎热的气候为特征。
The part of the Earth 's surface between the Tropics of Cancer and Capricorn ; characterized by a hot climate .
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他们一般在南北回归线的地方被发现，在那里温度升高，到赤道又下降，提供了一个空气清新、少雨的气候。
They are found near the Tropics of Cancer and Capricorn where the warm air which rises at the Equator sinks down again , giving a climate of clear skies and very low rainfall .