市民小心翼翼地走在冰面上，冰面上坑坑洼洼净是冰碴儿。
“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。
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A further 31 councils have secured agreements allowing for a later start date for their weekly food collections, so will not be viewed as missing the deadline.
Include test results (accuracy on random pairs)