Never apply to lips or eyes.

注意不要把洗甲水弄到嘴里和眼睛里。

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Does he have a habit of biting his lips or tongue?

他有没有咬嘴唇和咬舌头的习惯？

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For instance, when you see a face, we tend to think that we recognize someone by the shape of their lips or their eyes.

例如，当你看到一张脸时，我们倾向于认为，我们是根据嘴唇或眼睛的形状，认出他们是什么人的。

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Press your lips together with the corners straight or down.

把嘴唇并在一起，嘴角成一条直线，向下。

耶鲁公开课 - 心理学导论课程节选

Upon encountering sweetness, however, the reaction is an expression resembling a smile followed by licking the lips or even a burst of eager sucking movements.

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Some 26% were admitted for anaphylaxis - a sudden, severe and potentially life-threatening reaction, which can cause dangerous swelling of the lips or face and lead to breathing problems.

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"By that I mean try to imagine creating a cavity inside your mouth without any air bubbles and by letting in no air through your lips or throat -- it's basically impossible at sea level because the air pressure outside your mouth pushes the air pocket closed, " he said.

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