“变”的是策略、方法与重心。平台必须变得更“重”，投入真金白银铺设数字基础设施，输出成熟的运营方法论，研发普惠的前沿技术，甚至担当维护公平市场环境的“裁判员”。其利润的来源，也日益体现为提供这些庞大而复杂的“重服务”所应得的回报。
Tracing and identifying the sources of an outbreak is a challenging task that can take months or years. Thanks to the Blockchain, however, companies now know exactly where their food has been—so they can trace its location and prevent future outbreaks.
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