Ppmv
abbr. parts per million by volume 百万分体积比
🗣️ 情景例句
a two-bedroom house in Mount Kisco.
一栋有两间卧室的房子， 在Mount Kisco。
What is on the schedule this morning?
今天上午有什么安排？
Maybe some folk songs to start with?
先演奏些民歌吗？