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
Don't move! Get down on the floor.
别动！趴到地上！
It seems he's famous.
看起来他好像很出名。
After working hard during the day I like to relax in the evening.
白天干了一天，晚上我要放松一下。