中午时分，我们带着居延海日出后燃起的湖岸上大片大片紫灰色的芦花升腾起的光芒踏上了归途。
B-Time I-Time I-Time I-Time O B-Person I-Person O O B-Location I-Location I-Location B-Thing O O O O O B-Location I-Location I-Location O O O O O O O O B-Thing I-Thing O O O O B-Thing I-Thing O O O O O O