2. 将元素均匀分配到对应桶中
One of the most stressful moments was shipping our products from Italy. The agency didn’t submit our documentation on time, delaying the shipment. We already had pre-orders, two local grocers waiting and meetings lined up. It started to feel like people were questioning whether we could actually deliver.
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这些节省下来的资金，被医院重新投入到医疗设备、研究和患者护理上，而非行政支出。更重要的是，志愿者处理了大量非核心任务，让医护人员能专注于医疗本身，提升了运营效率——尤其是在疫情恢复期，志愿者的回归，对医院的正常运转起到了关键作用。
Unconsumed bodies: Pull semantics mean nothing happens until you iterate. No hidden resource retention — if you don't consume a stream, there's no background machinery holding connections open.