When using a cooler, keep it out of the direct sun by placing it in the shade or shelter.
在使用冷冻箱时，应放置在树阴或阴凉处以避免直射阳光。
The temperature under the shade tree can be up to 20 degrees cooler than standing in the direct sunlight.
树荫下的温度甚至会比太阳直射的温度低20度。
The direct type of evaporative air cooler uses primary wet surfaces.
直接蒸发式空气冷却器是利用原有的湿表面工作的。
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