只是在前几年修铁路时，因树腋窝里有一群寄居的山蜂，怕伤了工地上来自四川的民工。
O O O B-Time I-Time I-Time I-Time B-Thing I-Thing B-Time O O B-Thing I-Thing I-Thing B-Location O O O O O O B-Thing I-Thing O O O O B-Location I-Location O O O B-Location I-Location O B-Person I-Person O