Telelibrary
卫星图书馆服务
🗣️ 情景例句
How long do you intend to stay there?
你打算在那停留多久？
They are never alone accompanied by noble thoughts.
思想高尚者决不会孤单。
Similarly, our own present primitive chemical rockets, though good enough to orbit men,
同样，我们目前使用的原始化学火箭，虽然可以把人送入轨道，