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
If you can't pay the bill, you're going to be in trouble.
你如果不能付账，就要倒霉。
Where were you yesterday afternoon?
你昨天下午在哪儿？
I think you need a number 47. The bus stop is along that road, on the right.
我想你需乘47路车。