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
There are lots of places to go,
有很多地方要去，
The population of Africa is growing by leaps and bounds.
非洲的人口正在极其迅速地增长。
Today Ellis Island is a museum, showing the roots of America's new citizens, who came from all the corners of the earth.
今天，埃利斯岛成了一座博物馆，展示着来自世界各地的美国新公民的根源。