Efds
abbr. error-free decisecond 无差错分秒，无误码分秒，十分之一无误码秒
🗣️ 情景例句
How's the parade?
行怎么样
It's very nice of you to come and see me off.
您来给我送行，真是太客气了。
Yes, they are.
对，这些是英语书。