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
Tonight's a problem. What about tomorrow night?
今晚不行，明晚怎样？
You can't count on the weather being fine.
你不能指望天晴。
What does Christmas mean? Christmas Day is the birthday of Jesus Christ.
圣诞节是什么意思？圣诞节就是耶稣基督诞生的日子。