| 单词 | 收紧胸肌 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔pectoral〕I was required to hold out my arms and flex my pectorals.我被要求伸展手臂，收紧胸肌。柯林斯高阶〔pectoral〕I was required to hold out my arms and flex my pectorals.我被要求伸开双臂, 收紧胸肌。外研社新世纪 |
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