P-r interval
[医] P-R间期(心电图)
🧩 词语组成解析
🗣️ 情景例句
Just try to be patient.
尽量耐心一点。
What time is it now?
现在几点？
By 1884, a statue which was 151 feet tall had been erected in Paris.
到1884年，一座高度达151英尺的雕像在巴黎竖立起来了。