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。
They regulate the surplus and deficiency in time, and smooth out the price fluctuation, which contributes to society.
他们在时间上调剂了余缺，平滑了价格的波动，对社会有贡献。
We will be able to smooth out our differences.
我们一定能消除我们之间的分歧。
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