总的说来，对热的应用其作用是使皮肤中的血管产生扩张，因而增进循环。
In general, the effect of the application of heat is to produce dilation of vessels in the skin, thus promoting better circulation.
总的说来，对热的应用其作用是使皮肤中的血管产生扩张，因而增进循环。
In general, the effect of the application of heat is to produce dilation of vessels in the skin, thus promoting better circulation.
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