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
Your father's a wonderful doctor, Richard.
你父亲是个了不起的医生， Richard。
How many dozen are you going to take?
你要拿几打？
Why didn't you tell her to use her own?
你为什么不叫她用自己的？