《环形世界》是一部著名的科幻小说，作者是拉瑞·尼文。

One famous work of science fiction is “Ringworld”, by Larry Niven.

youdao

《环形世界》是一部著名的科幻小说，作者是拉瑞·尼文。

One famous work of science fiction is “Ringworld”, by Larry Niven.

youdao