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
What's the damage?
多少钱？
I am working for a trading company as an assistant manager in the overseas distribution section.
我在一家贸易公司的海外行销部门做经理助理。
There were no classes this afternoon. My classmates all went to People's Park.
今天下午没有课。同学们都到人民公园去了。