动词短语
中文翻译：露出微笑
同义词：
['smiling', 'show a smile']
例句：
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1.He cracked a smile when he saw his friend's face.
他看到朋友的脸时露出了微笑。
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2.She cracked a smile at the unexpected joke.
她对那个意想不到的笑话露出了微笑。
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3.Cracking a smile can help to ease tension and make someone feel more comfortable.
露出微笑可以帮助缓解紧张，让某人感觉更舒适。