Hrv
[医][=heart rate variability]心率变异性
🗣️ 情景例句
The way to learn a language is to practice speaking it as often as possible.
学习一门语言的方法就是要尽量多地操练说出它来。
It's Monday today.
今天是星期一。
What's the number of your car?
您的汽车牌号是多少？