Ppsa
abbr. Pan-Pacific Surgical Association 泛太平洋外科医生协会; prepaid service agent 预付费业务代理
🗣️ 情景例句
About forty minutes, I think.
我想大约40分钟。
Don't worry about it.
别担心。
its action depends on the surface, water or ground, over which it rides.
它的飞行取决于它所悬浮的水面或地面。