Pfa
abbr. 故障预警分析（Predictive Failure Analysis）；职业球员联盟（Professional Footballers' Association）；全氟烷氧基烷烃
🗣️ 情景例句
Do you happen to know...
你是否碰巧知道…
An ounce of prevention is worth a pound of cure.
预防胜于治疗。
Not at all, smiled Lucy. You're welcome!
“没关系，”露茜笑着说，“不用谢！”