Scientists used to think that their diving heart rate was 15 bpm.
科学家们曾经认为他们的潜水心率是每分钟15次。
When the whales go to the ocean's surface to breathe, their heart rate is between 25 and 37 bpm.
鲸鱼游到海面上呼吸时，它们的心率达到每分钟25到37次。
E.g.: 3 minutes running at 12km/h, heart rate measured after the 3 minutes: 130 bpm; 3 minutes running at 13km/h, heart rate measured after the 3 minutes: 150 bpm.
13km/h跑3分钟，之后测得心率是150bpm
If you have a heart-rate monitor, you should keep your rate below 145 bpm.
如果你有一个心率监测仪，你就应该让你的心率保持在145次以下。
If you have a heart-rate monitor, you should keep your rate below 145 bpm.
如果你有一个心率监测仪，你就应该让你的心率保持在145次以下。
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