Hrv
[医][=heart rate variability]心率变异性
🗣️ 情景例句
Then walk two blocks to the traffic light.
再走两条街到红绿灯处
I'm afraid you will be discouraged.
我怕你会灰心。
I have more than you. Do I have fewer apples than you? Let me see!says Jim.
“我的苹果比你的多。”“我的苹果比你的少吗？让我看看！”吉姆说。