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
I understand your feelings about it, Richard.
我了解你对这种事的心情, Richard。
I owe you one.
我欠你一个人情。
Everybody says I must be mad and they are probably right.