如果水是凉的,而空气是暖的,并伴有太阳,此时花费较长的时间入水是可以的,因为你的身体没有散失热量。
If the water is cold but the air is warm, and sun is shining, it's OK to take longer getting in since your body's not losing heat.
浸泡在冷水中导致热量迅速散失。
举个例子来说,假如住宅的窗户没有进行恰当的隔热处理,或是不能在防止热量散失的同时阻挡紫外线,利用太阳电池板取暖的效力就会大大减弱。
For example, heating a home using solar panels becomes much less effective if the Windows in the house are not properly insulated or treated to keep the heat in and the UV rays out.
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