R-r interval
[医] R-R间期(心电图)
🧩 词语组成解析
🗣️ 情景例句
How, Robbie?
怎么找， Robbie？
No. You're going the wrong way. You want the Number 11. It stops in front of the post office.
不去。你乘错车了。你要乘11路。它在邮局门前停站。
I'm twelve. What's your name, please?
12岁了。请问您叫什么名字？