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
I've been looking forward to meeting your husband, Mrs. Stewart.
我一直希望能见到 先生 Stewart太太。
Before I eat dinner,I read the newspaper for a while.
在我吃晚饭以前，我花一会儿读报纸。
Look at the mess you've made!
你搞得一团糟！