Currently the UK experiences about seven days a year where rainfall is more than 80mm a day – considered a heavy rainfall event. If 30mm of this falls in an hour it typically triggers a flash flooding warning.
arr.push(p.val); // 存储节点值而非节点本身，简化后续操作
，详情可参考safew官方下载
SelectWhat's included。业内人士推荐WPS下载最新地址作为进阶阅读
习近平总书记微笑作答：“我是人民的勤务员。”