名词
中文翻译：肌肉
同义词：
['muscle', 'skeletal muscle例句：1. The muscles in the arms are responsible for lifting objects.（手臂的肌肉负责举起物体。）']
例句：
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1. The muscles in the arms are responsible for lifting objects.
手臂的肌肉负责举起物体。
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2. The doctor advised him to exercise regularly to maintain his health.
医生建议他定期锻炼以保持健康。
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3.Muscles are made up of bundles of fibers that contract and relax when we move.
肌肉由纤维束组成，当我们移动时会收缩和放松。