十月的北方，满山遍野已没有了往日的绿色，树叶飘落，百花凋谢，秋景让人觉得有些萧条、凄凉。
B-Time I-Time O B-Location I-Location O B-Location I-Location I-Location I-Location O O O O B-Time I-Time O O O O B-Thing I-Thing O O O B-Thing I-Thing O O O B-Thing I-Thing O B-Person O O O O O O O O O O