树荫下的温度甚至会比太阳直射的温度低20度。

The temperature under the shade tree can be up to 20 degrees cooler than standing in the direct sunlight.

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首先，把洋葱在日光下晾晒一到数天，然后置于阳光无法直射的地方阴干两到三周。

First, dry the Onions in the sun for a day or so. Then bring them out of direct sun for two to three weeks.

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通过直立行走，减少被太阳直射的皮肤面积，控制体温可能也会相对更容易一些。

Standing upright might even have helped them control their temperature better by reducing the amount of skin directly exposed to the sun.

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