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
Thanks for going. I figure we should get together more often.
谢谢你接受邀请。我们日后多见些面吧！
Before gold,even kings take off their hats.
在黄金面前，国王也要脱帽。
We're having a lot of trouble filling this order.
我们这次供货很有问题。