How to cause this: it's enough just to wipe the sweat off your head with a tip of your tie.

怎样才能让她这样呢：用你领带的一角擦掉你头上的汗就足够了。

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As you scrub off dirt, you also wipe off medicines from your skin and pharmaceuticals excreted in sweat, according to a new study.

一项新研究表明，当你用力擦洗的同时，你皮肤中的药物，以及随汗液排出的药剂也会擦拭出来。

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Keep your jacket on, and have a cotton handkerchief handy: "no one wants to watch you wait for that drop of sweat to fall off your forehead," the authors note, so just wipe your face.

穿上外套，并随身携带一条棉质手绢。作者写道：“没有人希望看到你一直等到额头上的汗自己慢慢滴下来。”所以，擦擦脸没有关系。

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