Seds
abbr. system effectiveness data system 系統效能數據系統; sequential dual-scanning system 順序雙掃描系統; support equipment data system 支援設備數據系統; space electronic detection system 空間電子探測系統
??? 情景例句
What are you trying to say?
你想說什么？
You're a good dancer.
你舞跳的真好。
I'm afraid some people forgot to sweep the floor.
它不如平時干凈，恐怕是一些人忘記掃地了。