R-r interval
[医] R-R间期(心电图)
🧩 词语组成解析
🗣️ 情景例句
As a matter of fact, my whole family banks here.
事实上， 我们全家都是贵行的顾客。
Whatever man has done man may do.
天下无难事。
She stood three feet high and her hands rested on her hips.
她身高3英尺，双手叉腰。