* @param arr 待排序数组
Фото: Артем Геодакян / РИА Новости
，详情可参考51吃瓜
import { Stream } from 'new-streams';
"Many of these churches have been on these sites for probably 1,000 years, and probably as long as they've been standing they've had bats in them," says Diana Spencer, from the Bats in Churches Project.