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
That's the way.
就这样。
Diet cures more than the doctor.
药补不如食补。
We need our order separated into three different boxes.
我们订的货需要分装三箱。