Otcs
abbr. operational teletype communications subsystem 作战电传打字通信子系统; optically-induced transient-conduction spectroscopy 光诱生瞬变传导谱分析法; optically-induced transient-current spectroscopy 光诱生瞬变电流谱分析法
🗣️ 情景例句
I have worked hard at my major subject.
我对主修课特别用功。
Yes, I am.
是，我是。
It's over there,behind the teapot.
就在那儿，茶壶后面。