Ptm
n. pulse-time modulation的简写
🗣️ 情景例句
Don't worry about it.
别介意。
Every little makes a mickle.
积少成多。
After consulting my railway timetable, I noted with satisfaction that there was an express train to Westhaven.
我查看了列车时刻表，满意地了解到有一趟去威斯特海温的快车。