Fac
abbr. 空军前进引导员（forward air controller）；联邦咨询委员会（Federal Advisory Council）；联邦航空委员会（Federal Aviation Commission）
🗣️ 情景例句
I'll be off to bed myself in a minute.
我再过一会也要上床睡觉了。
Rain is falling.
外面在下雨。
In five working days, if we ship by air.
如果空运的话，五个工作天内可以到。