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
I have the key, but it doesn't work.
我有钥匙， 但是开不开箱子。
One must howl with the wolves.
入乡随俗。
I guess I could come over.
我想我能来。