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。She was taken to hospital suffering from an irregular heartbeat.她因心律不齐被送往医院。I was a little breathless and my heartbe...
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。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。Each heartbeat has two basic par...