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
And Max has your initials, Grandpa: M.S.
Max的名字开头字母与你的一样 ,爷爷 ,都是M.S.。
Which side do you favor?
你支持哪一边?
I knew that experts from the local museum would soon visit the cave.