B2 [ C or U ] one of many tissues in the body that can tighten and relax to produce movement肌肉
C1 to injure a muscle by stretching it too far so that it is very painful拉伤肌肉
More examples
The contraction of this muscle raises the lower arm.
A work-out in the gym will exercise all the major muscle groups.
He pulled a muscle in his groin.
Barkley suffered a strained thigh muscle late in the preseason.
I pulled a muscle in my back lifting some drawers.
[ U ] the power to do difficult things or to make people behave in a certain way力量,实力
noun
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