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
Trees, grass.
有绿树 ，有草地。
She was so stunned, that she couldn't speak.
她惊愕得说不出话来。
begging response from those around them.
询问周围人的反应。