Ppmv
abbr. parts per million by volume 百万分体积比
🗣️ 情景例句
lots of things to do.
许多事情要做。
This man is painting the house the wrong color.
这个男人在漆着和房屋不相称的油漆。
Only two stray dogs benefited from all this confusion, for they greedily devoured what was left of the cake.
只有两只野狗从这一片混乱中得到好处，它们贪婪地吃掉了剩下的蛋糕。