Sedis
abbr. surface emitter detection identification system 地[海]面发射机探测识别系统
🗣️ 情景例句
Your duties include checking the post and distributing it.
你的职责是检查和发送邮件。
I get out of bed about 7 o'clock every morning.
我大约每天早上7点钟起床。
It costs five hundred pounds.
它的售价是500英镑。