Even though they understand how you get a cramp in your calf at night the cause of night cramps is still unknown.

虽然人们知道了造成夜晚小腿休息抽筋的方法，但始终不知道造成抽筋的原因。

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Even though they understand how you get a cramp in your calf at night, the cause of night cramps is still unknown.

虽然人们知道了造成夜晚小腿休息抽筋的方法，但始终不知道造成抽筋的原因。

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It should not cramp on me again unless it gets too cold in the night.

它不会再抽筋了，除非夜里太冷。

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