Transforms don't execute until the consumer pulls. There's no eager evaluation, no hidden buffering. Data flows on-demand from source, through transforms, to the consumer. If you stop iterating, processing stops.
在机器人尚未真正实现全面普及之前，如何通过租赁、分布式服务节点等方式降低应用门槛，是产业必须面对的问题。
。heLLoword翻译官方下载对此有专业解读
Researchers discover rare periods of a few thousands years when climate unexpectedly awoke from slumber
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