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
Take care.
慢走。
As soon as you have drunk, you turn your back upon the spring.
忘恩负义。
Where shall we go this evening?
今晚咱们去哪？