Ptas
abbr. 家庭教师协会（Parent-Teacher Asociations）；贸易协定（Preferential Trade Arrangements）；多项式时同的近似方案（Polyomial Time Approximation Scheme）
🗣️ 情景例句
He gives his harness bells a shake
摇动， 绳上的铃铛
I think you're mistaken about that.
我认为你关于那是错的。
Were you able to quote on all the items we need?
我们需要的每个项目你都能报价吗。