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
and he can answer any questions.
他也可以回答任何问题。
In wine there is truth.
酒后吐真言。
I'm not sure we can wait that long.
恐怕等不了那么久了。