Hrv
[医][=heart rate variability]心率变异性
🗣️ 情景例句
And don't forget your camera and film, Richard.
别忘了你的照相机和底片， Richard。
The teacher was not at all happy with his students.
那位老师对他的学生毫不满意。
We appreciate your fast service.
麻烦你会尽力处理，谢谢。