嬉皮笑脸 smirking
Explanation
形容嬉笑不严肃的样子。通常用于描述一个人态度不认真，缺乏严肃性。
Describes a smiling, unserious appearance. Usually used to describe someone's unattentive and lacking seriousness.
Origin Story
小明考试没考好，但他嬉皮笑脸地对妈妈说：“没事，下次努力！”妈妈虽然生气，但看到他这样，也忍不住笑了。小明知道这次考试没考好，却依然嬉皮笑脸，说明他缺乏对学习的责任感，没有认真对待考试。
Little Tom didn't do well on his exam, but he said to his mother with a smirk, "It's okay, I'll try harder next time!" Although his mother was angry, she couldn't help but laugh when she saw him like this. Tom's smirking despite his poor exam score shows a lack of responsibility towards his studies and a failure to take the exam seriously.
Usage
用来形容态度不严肃，嬉笑的样子。
Used to describe an unserious and smiling appearance.
Examples
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他嬉皮笑脸地走进教室，一点也不严肃。
ta xipi xiaoliandi zou jin jiaoshi, yidian ye bushenyus.
He walked into the classroom with a smirk, not serious at all.
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他嬉皮笑脸地应付老师，态度很不认真。
ta xipi xiaoliandi yingfu laoshi, taidu hen buranzhen.
He dealt with the teacher with a smirk, his attitude was very unserious..