science fiction有复数吗

　　This biography sometimes crosses the borderline between fact and fiction.

　　这部传记有时混淆了事实和虚构。

　　The book intermingles fact with fiction.

　　这本书事实和虚构并存。

　　This novel is not science fiction, nor is it Gothic horror.

　　这本小说既非科幻小说亦非哥特派恐怖小说。

　　She attended a series of lectures about science fiction writing.

　　她听了关于科幻小说写作的系列讲座。