Ppmv
abbr. parts per million by volume 百万分体积比
🗣️ 情景例句
This time draft will fall due at the end of this year.
这张期票年底到期。
Soft fire makes sweet malt.
慢工出细活。
In spite of all that has been said, the tourists have been picking leaves and cutting their names on the tree-trunk.
尽管有上述种种说法，但游客们还是照常摘树叶和把他们的名字刻在树干上。