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
Politics are a sensitive subject of conversation.
政治是交谈的敏感话题。
To worry about tomorrow is to be unhappy today.
担心明天，今天就不愉快了。
And, as in a nightmare, there was nobody in sight to help me.
就像在恶梦里一样，见不到一个人可以帮助我。