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Bulk and lack of refrigeration made both transportation and storage difficult.
牛奶体积大，又没有冷冻设备，运输和贮藏都很困难。
youdao
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Industry insiders call it physical energy storage refrigeration.
业内人士称之为物理储能制冷。
youdao
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Industry insiders call it physical energy storage refrigeration.
业内人士称之为物理储能制冷。
youdao