更值得关注的是技术迭代风险。机器人更新换代速度较快，新款产品一旦性能更好、价格更低，旧设备的租赁吸引力会迅速下降。设备折旧不仅来自物理损耗，更来自技术代差。
Twig's is the last manufacturer of Sun Drop to use returnable glass bottles as opposed to plastic. And it is one of very few to still use real sugar instead of high fructose corn syrup.
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Even the Penn-Wharton study added a caveat to its finding that deportations might raise low-skilled wages: High-skilled workers, who make up nearly two-thirds of the U.S. workforce, would likely see their own wages decline because they rely on low-skilled labor to maximize their productivity, according to its analysis.
一名女子站在尖东大富豪夜总会外的街边（图：南方人物周刊记者 方迎忠）