Sedis
abbr. surface emitter detection identification system 地[海]面发射机探测识别系统
🗣️ 情景例句
Sit down, sit down.
请坐， 请坐。
I suppose he's coming to us.
我才他会到这来的。
And, because most books were not printed in Braille.
因为大多数的书本没用布莱叶文印刷。