Ivb
[医][=intraventricular block]心室内阻滞
🗣️ 情景例句
A friend in need is a friend indeed.
患难朋友才是真正的朋友。
I'd like a refund.
我要想退款。
The crowd began to shout, but the drunk was unaware of the danger.
人们开始大叫起来，但醉汉却没有意识到危险。