求翻译：The most universal facial expression is, of course, the smile-its function is to show happiness and put people at ease是什么意思？

待解决

悬赏分：1 - 离问题结束还有

The most universal facial expression is, of course, the smile-its function is to show happiness and put people at ease

问题补充：

匿名	2013-05-23 12:26:38 最普遍的面部表情是，当然，微笑及其功能是显示幸福和让人民放心

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