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
We have to talk the matter over now.
我们必须讨论一下这件事。
Please try to be congenial and welcome the guests with a small.
请用笑脸愉快地迎接客人吧。
Yes, please. This is Bill here. Is that Mrs Read?
是的，劳驾了。我是比尔。你是里德夫人吗？