1、
A muscle cramp is an involuntarily and forcibly contracted muscle that does not relax.
肌肉抽筋是指肌肉的无意识强烈收缩,无法获得松弛.
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2、
3、
These verbs all mean to draw back involuntarily , as through fright , timidity, or abhorrence.
这些动词都意为如因争斗 、 羞涩或厌恶等而不自愿地撤回.
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