Ssto
abbr. single-stage to orbit 单极轨道
🗣️ 情景例句
How about a date with your grandfather?
和你爷爷约个会好吗？
Let us imagine a hypothetical case where we disagree.
让我们假设一个我们不同意的状况。
Do you know what time the film begins?
你知道电影何时开始？