有一层脂肪在她的肌肉上。

There is a layer of fat over her muscles.

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有四层这里的肌肉和臀大肌是第一个。

Here are four muscles and the gluteus maximus is the first one.

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有四层这里的肌肉和臀大肌是第一个。

Here are four muscles and the gluteus maximus is the first one.

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