他们携带的家乡草木，被他们称作“离香(乡)草”，离开家乡愈远，乡草香气愈浓。
B-Person I-Person O O O B-Location I-Location B-Thing I-Thing O O B-Person I-Person O O O B-Thing I-Thing I-Thing I-Thing I-Thing I-Thing O O O O B-Location I-Location O O O B-Thing I-Thing O O O O O