Ppbv
abbr. parts per billion by volume 十亿分体积比
🗣️ 情景例句
Well, I suppose that might work.
嗯，想这样或许可以奏效。
The negotiations on the rights and obligations of the parties under contract turned out to be very successful.
就合同保方的权利和义务方面的谈判非常成功。
OK! Colour it green, please!
好！请把它染成绿色的。