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
She is in a meeting until night.
她开会要开到晚上。
I was not aware of the danger.
我没有意识到危险。
I wish I had your will power.
但愿我有你的意志力。