Pmdd
abbr. Personnel Management Development Directorate 人事管理开发委员会; premenstrual dysphoric disorder 月经前焦虑障碍
🗣️ 情景例句
Well, are you going to tell me what's on your mind, Harry?
好了， 你要不要告诉我你在想什么， Harry？
Ooo! I can't look.
唔，我不忍心在看下去了。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。