P-r interval
[医] P-R间期(心电图)
🧩 词语组成解析
🗣️ 情景例句
You sounded like you've made a decision
你好像已经作了决定
Never put off till tomorrow what may be done today.
今日事，今日毕。
In primitive cultures the obligation to seek and to receive the traditional instruction is binding to all.
在原始文化中，寻求和接受传统教育的义务对全民都有约束力。