Frantzel's sign
[医] 弗伦策耳氏征(二尖瓣狭窄时的杂音改变)
🧩 词语组成解析
🗣️ 情景例句
Everyone is expected to stick to the rules.
每个人都要遵守规则。
I'll call the roll before class.
课前我要点名。
He appears to be your friend but I doubt if he is.
他看上去像是你的朋友，但我怀疑他是否是真心的。