Ssts
abbr. signaling and supervision techniques study 信号传送与监听技术研究; space surveillance and tracking satellite 空间监视与跟踪卫星; space-based surveillance and tracking system 天基监视与跟踪系统
🗣️ 情景例句
When's the next class?
下一次上课什么时候？
He has a pair of gloves.
他有一副手套。
I have a surprise for you.
我有一个意想不到的东西给你看。