Sedis
abbr. surface emitter detection identification system 地[海]面发射机探测识别系统
🗣️ 情景例句
We once found a cat.
我们有一次找到一只猫，
Up to you.
你说了算。
I waited till he came near, then I asked him the way to our old village.
等他走近了，问他去老家的路。