Ppo
abbr. 聚对苯氧化物（poly - p - phenylene oxide）；胃蛋白酶最大排泄量（peak pepsin output）
🗣️ 情景例句
It is not as difficult as it looks.
这并不像看起来那丢难。
You won't believe it,but it was really cheap.
你不会相信的，但这条裤子确实很便宜。
This attracted the attention of Richard Humphries who was then the most eminent boxer in England.
这引起当时英国拳坛名将理查德。汉弗莱斯的注意。