wear a happy expression 面带喜色 ; 面生喜色 ; 露出愉快的神情
He made every effort to smooth out his habitual worried look and wear a sunny smile, since a happy expression can lead to genuinely happy feelings.
他努力消除他惯常的忧虑神情，脸上挂着灿烂的笑容，因为快乐的表情会带来真正快乐的感觉。
He always wearing a happy expression.
他总是面带喜悦之情。
Smiling is a happy expression of a body language.
微笑是一种表达快乐的一种身体语言。
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