They smile softly and gently.

她们温柔而礼貌地微笑着。

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They smile and they kiss.

他们微笑，他们亲吻。

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They smile and bow.

他们向我们微笑并鞠躬。

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They smile and they kiss. In the English language, there are many expressions using the word mouth.

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Then when a stranger approaches or someone else approaches there they'll tend to give more of a greeting smile.

当陌生人或其他人接近时,他们是问候式微笑。

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They'll smile appropriately, making an important point that smiling is not learned by looking at other people's faces.

他们会适当地微笑，说明微笑不是学习的,通过观察其他人的面部表情。

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He growls, he snarls, he makes a mess and still they smile benignly and applaud.

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They smile more, speak faster, pronounce words more clearly, and move their heads and bodies more often.

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They shake their heads up and down as an act of validation, and then they smile and laugh.

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