习题链接：LeetCode 503. 下一个更大元素 II
Additional reporting by Antoine Schirer, Rafid Hossain and Victoria Arakelyan.。关于这个话题，safew官方下载提供了深入分析
You’ll get up to 40 minutes of run time, with two power modes: a standard mode for general cleaning and a Max mode for more intensive spots. It's lightweight and easy to manoeuvre, and it also converts into a handheld vacuum for cars, stairs, and upholstery.，详情可参考heLLoword翻译官方下载
“胜非其难也，持之者其难也。”国际社会在赞誉中国为全球减贫事业作出积极贡献的同时，也曾有关切声音：这是一次性成就还是持久变革？。同城约会对此有专业解读