Fof
abbr. free on field (airmail) 野外免费
🗣️ 情景例句
Come and see me later and I'll give you some advice.
稍后来见我，我给你一些建议。
Hungry dogs will eat dirty puddings.
饥不择食。
The platforms extend to a depth of over 100 feet under the sea.
平台深入海底100英尺。