218　Call first 先打个电话

While rummaging through my attic, I found an old shotgun. Unsure about how to dispose of it, I called my parents. “Take it to the police station,” my mother suggested. I was about to hang up when my mother added, “Call first.”
我在整理阁楼的时候找到一把旧猎枪。我不知道该如何处理它，就给我父母亲打电话。我妈建议说：“把它送到警察局去。”我刚要挂电话，我妈接着说：“先打个电话去。”