B端市场更是深陷价格战与项目制泥潭，规模效应难以形成。
McKenzie is one of 120 BAS employees in total who were in Antarctica for the summer season that is now coming to an end. Most, including McKenzie, will return to the UK by the end of May, yet up to 50 will stay for the darkness of winter.
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// 易错点2：遍历结束后k仍0 → 栈是递增的，末尾数字更大，移除末尾k位
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曾经的县城“黄金地段”（图：南方人物周刊记者 刘璐明）