R-r interval
[医] R-R间期(心电图)
🧩 词语组成解析
🗣️ 情景例句
Well, how do you like it so far?
好了， 到现在为止， 你们感觉怎么样？
Sorry kept you waiting so long. You are on .
抱歉让你久等了，接通了。
Indeed, we lack practice and experience nowadays in dealing with primitive conditions.
确实，我们今天缺乏对付原始环境的实践和经验。