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
This winter has been a cold one.
目前来看，今年冬天算比较冷的。
Palm Springs. I've got a cousin there.
棕榈泉，我有个表兄在那儿。
It was used for keeping tea hot after it was made,said Wei Hua. It was filled with hot water.
“那是在茶沏好后用来保温的，”魏华说，“用来装热开水的。”