Ppbv
abbr. parts per billion by volume 十亿分体积比
🗣️ 情景例句
This food is heavenly, isn't it?
这一顿太美好了， 是吗？
Strong packing will protect the goods from any possible damage during transit.
坚固的包装可以防止货物在运输途中受到任何损失。
I want my kite. It's in that tree.
我在拿我的风筝，在树上呢！