To palpitate is to pulsate with excessive rapidity and often arrhythmically, as a malfunctioning heart might;
指象功能不正常的心脏一样过分快速且经常是有节奏地搏动；
Harlow says that he too has listened to hibernating bear hearts going still for a stretch and then kerthumping arrhythmically.
哈洛称他也听见过冬眠中的黑熊心率在长时间的静止之后没有节奏的跳动起来。
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