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
Football players are always popular with the ladies.
足球队员往往很讨女生的喜爱。
If he doesn't, will you wash the dishes.
如果他不，你会洗碟子吗？
We are so familiar with the fact that man ages,
我们对人总是要衰老的现象并不陌生，