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muscle contraction的英文翻译是什么意思，词典释义与在线翻译：
英英释义
Noun:
-
(physiology) a shortening or tensing of a part or organ (especially of a muscle or muscle fiber)
muscle contraction的用法和样例：
例句
- The heart muscles contract to expel the blood.
心脏肌肉收缩以挤压出血液。 - When the muscle between the bones shortens, one bone has to move.
但当肌肉收缩时只有一块骨头运动。
