My body is constantly changing because the relationships between my arms and my head and so forth. My muscles are moving.

我的身体在不断改变,因为我的胳膊和脑袋的关系等等,我的肌肉在动。

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improve your range of motion and strengthen those muscles, they get weaker during that process

改善你的运动范围并加强这些肌肉，它们就会在运动过程中变弱，

健康生活 - SpeakingMax英语口语达人

The muscles of the heart have to give blood themselves so they have blood vessels inside.

心肌自身也需要血液,所以在这些肌肉内部也有血管

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It's muscle memory and that happens in the--that's mostly in the parietal lobe.

这就是肌肉记忆,它基本上发生在顶叶部分

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and some things on the bars over at Muscle Beach,

在肌肉海滩玩单双杠，

激情生活 - SpeakingMax英语口语达人

Then that insulin would accumulate in the muscle, enter the blood, and circulate all over the body and so you'd turn the muscle into an insulin making tissue.

胰岛素会在肌肉组织中累积,并进入血液,使其在全身循环,如此就使肌肉成了能产生胰岛素的组织

耶鲁公开课 - 生物医学工程探索课程节选