heartbeat [ˈhɑ:rtbi:t]

例句:

• She was taken to hospital suffering from an irregular heartbeat.
  她因心律不齐被送往医院。
  
• Experimenters have succeeded in controlling the rate and regularity of the heartbeat.
  实验者已经成功控制了心跳的速度和频率。
  
• I was a little breathless and my heartbeat was bumpy and fast.
  我有点儿喘不上气，心脏咚咚地快速跳动着。
  
• I would buy another like it in a heartbeat.
  来自WSJ
• With no football the city loses its heartbeat.
  来自BBC
• Lane Dean tried to control the rate of his heartbeat.
  来自NEWYORKER