Ppmv
abbr. parts per million by volume 百万分体积比
🗣️ 情景例句
What about you?
你呢？
What does your father do?
你父亲做什么工作？
Wherever it went, it left behind it a trail of dead deer and small animals like rabbits.
无论它走哪儿，一路上总会留下一串死鹿及死兔子之类的小动物，