Ssto
abbr. single-stage to orbit 单极轨道
🗣️ 情景例句
Don't laugh. In the beginner's class,they give you a chance to rest between exercises.
别笑。在初级课程中你有机会休息。
People greet one another with Happy New Year.
人们相互祝福“新年好”。
It looks like a chicken. But I don't think chickens can swim.
看起来像只小鸡。不过我认为小鸡不会游泳啊！