A problem with any part of this process can cause an arrhythmia.
这整个心跳过程的任何一个环节出了问题，都会导致心律不齐。
This problem cause many novice friend's interest, this is they often meet with.
这一问题引起许多新手朋友的兴趣，这是他们经常遇到的情况。
This problem cause many novice friend's interest, this is they often meet with.
这一问题引起许多新手朋友的兴趣，这是他们经常遇到的情况。
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