the_universal_facial_expression

1.A smile is the universal facial expression -it is intended to put people at ease.
微笑是普遍运用的面部表情，它能安人心境。
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2.A smile is the universal facial expression — it is intended to put people at ease.
微笑是普遍运用的面部表情，意在使人放松。
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3.The most universal facial expression is, of course, the smile---its function is to show happiness and put people at ease.
最普遍使用的面部表情当然是微笑——其作用是表示快乐和安人心静。
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