Navaids
(navaid 的复数) n. 助航系统
🗣️ 情景例句
Robbie pulled a boy out of the water.
Robbie从水中救出一个孩子。
By the way,who are you waiting for?
顺便说,你正在等谁？
No, I think it is going to be mailed to your local branch.
不，寄到分社。