“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？
You can set multiple alarms with different bedtimes and wakeup times, which is really handy if your schedule is all over the place or you want to allow yourself to sleep in more on certain days. My only real complaint so far is that the sunrise feature isn't quite as strong as I want it to be. The Dreamie's sunrise goes from a warm glow to a bright blue-white, but it never gets big enough to wash over me in the way I expect a sunrise alarm to. Having the light on is helpful for orienting yourself when you're groggy and half-asleep, but it doesn't feel like it's having much effect on my actual wakeup process.
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那它就愿意只卖低价吗？当然不，它也想创新，搞了个33晚的“史诗下西洋”长航线，致敬郑和，其实卖得还不错。但架不住船公司自己没耐心，一看有人包船就跑回去做短线，最后把路走窄了。
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南方周末：关于本届肖赛，社交媒体上的争议空前地多，甚至有一些音乐家提出，音乐比赛本身就不应该存在。你怎么看这种说法？
* 时间复杂度: O(n²) 最好: O(n) 空间复杂度: O(1) 稳定: ✓。91视频对此有专业解读