Ppmv
abbr. parts per million by volume 百万分体积比
🗣️ 情景例句
She always plays with love.
她总是玩弄爱情。
Sincerely hope that your visit here will be worthwhile and meaningful.
衷心希望您的来访有收获且意义深远。
The woman walked out of the shop angrily and decided to punish the assistant next day.
这位妇女怒气冲冲地走出了商店，决定第二天教训一下那个售货员。