名词
中文翻译：腹部滑行
同义词：
['belly roll', 'belly squirm']
例句：
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1. She was belly floppingon the couch when I walked in.
我走进来时，她正趴在沙发上肚子朝下。
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2. The baby was belly flopping around in his crib.
婴儿在他的小床上翻滚。
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3. After a long dayat work, she decided to belly flop on the couch for a nap.
工作了一整天后，她决定在沙发上打个盹，做做腹部翻滚。