Rsr
abbr. regular sinus rhythm （心脏）正常窦性节律，规则的低节律; required supply rate 所需补给率
🗣️ 情景例句
Charley Rafer--you look as young as ever. Charley Rafer
你还像当年那样年轻。
He has a letter.
他有一封信。
Our friends Julie and Jack were there, too.
我们的朋友朱莉和杰克也去了。