They used to have 2 tags attached to one backing strip.
他们曾经在一个条状垫板上贴两个标签。
When the strip covering the adhesive backing is removed and the gel is applied to the skin, an evaporation process occurs that lowers the surface temperature of the skin.
当软凝胶背后的贴纸被揭掉并应用到皮肤上时，通过蒸发的原理和过程可以降低体表皮肤的温度。
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