Dbj
[电] 用以表示相对于射频讯号基准的单位
🗣️ 情景例句
May I speak to Miss Wang?
我可以和王小姐讲话吗？
Kennedy Airport, please. I have to be there by 7:00.
请到肯尼迪机场。我得在七点前赶到那儿。
He was just falling asleep when there was a loud knock at the door.
他刚要入睡，就有人很响地敲门。