Orthocardiac sign
[医] 起立性心脏征
🧩 词语组成解析
🗣️ 情景例句
Good morning, Mr. Kong.
早上好，孔先生。
I don't know for sure.
我不能肯定。
If the Houses of Parliament had not been burned down in 1834, the great clock would never have been erected.
如果不是国会大厦在1834年被焚毁的话，这座大钟永远也不会建造。