Bfd
abbr. 双向转发检测机制（Bidirectional Forwarding Detection）；发现路由器转发故障的新协议；二进制文件描述符（Binary File Descriptor）
🗣️ 情景例句
I'd like to make a couple of proposals to improve the whole situation.
为了改善整个局面，我们提出若干建议。
What are you going to do with the books?
你打算拿这些书怎么办？
Yesterday a beggar knocked at my door.
昨天一个乞丐来敲我的门，