if you are happy and you know it,then your face will surely show it.中文是什么？
如果你是快乐的，你知道这种快乐，那么你的脸上肯定会显示出快乐的样子。
if you are happy and you know it,then your face will surely show it.
if you are happy and you know it,then your face will surely show it.
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