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
Where are your manners?
你的规矩哪里去了？
Every heart has its own sorrow.
人人都有伤心处。
'Will you be spending your holidays abroad this year?' I asked.
“您今年去国外度假吗？”我又问。