尽管上小学的时候在书本上读过“青城天下幽，峨眉天下秀，剑阁天下险，三峡天下奇。
O O B-Time I-Time I-Time I-Time I-Time I-Time O B-Thing I-Thing O O O O B-Thing I-Thing O O O O B-Thing I-Thing O O O O B-Thing I-Thing O O O O B-Thing I-Thing O O O O