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
Haven't we met someplace before?
我们以前没见过面吗？
Judy is so reserved that it is hard to understand her.
朱迪非常内向而木讷，因而很难使人了解她。
Mary and her husband Dimitri lived in the tiny village of Perachora in southern Greece.
玛丽与丈夫迪米特里住在希腊南部一个叫波拉考拉的小村庄里。