Fra
abbr. 联邦铁路局（Federal Railroad Administration）；联邦储备法（Federal Reserve Act）；流量警报记录器（Flow Alarm Recorder）；自由基型（Free Radical Type）
🗣️ 情景例句
So tell me about your educational history.
请告诉我你的教育经历。
Frightened to death.
吓死人了。
Three quarters of the world's books and newspapers are written in English.
3/4的书籍和报纸是用英语写的。