动词短语
中文翻译：拍背
同义词：
['patting back', 'patting on the back', 'patting someone on the shoulder']
例句：
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1. He always gives a big backslap to his friends after a successful meeting.
会议成功后，他总是拍拍朋友的肩膀以示祝贺。
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2. The teacher patted the student on the back as they walked out of the classroom.
老师在学生离开教室时拍了拍他们的肩膀。
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3. After the presentation, the speaker gave a big backslap to the presenter, congratulating them on their success.
演讲结束后，演讲者给了主讲人一个大大的拍背，祝贺他们的成功。