R-r interval
[医] R-R间期(心电图)
🧩 词语组成解析
🗣️ 情景例句
You're Arnold Franklin!
你是Arnold Franklin！
I was just about to call you.
我正准备打电话给你。
No. She's wearing green trousers, and a yellow sweater.
不。她穿绿色裤子，黄色毛衣。