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
Well, my choice of careers.
是的， 我的事业抉择问题。
They had to call in a heart specialist.
他不得不请一位心脏病专家。
Aunt Harriet could not find words to praise Bessie's industriousness and efficiency.
哈丽特不知该用什么言辞来赞扬贝西的勤奋与高效。