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.
What is chickenpox and who can get an NHS vaccine?
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▲提示词：I want to wash my car. The car wash is 50 meters away. Should I walk or drive?｜图片来源：X@Google，更多细节参见同城约会
iOS 主工程需要添加转换工具：
The 2026 T20 World Cup semi finals are fast approaching. England didn't look particularly impressive in the initial group stage, but they've bounced back with wins over Pakistan and Sri Lanka. New Zealand are still unbeaten in this group but their match with Pakistan was abandoned due to rain — that could prove crucial as we approach the final round of group-stage fixtures.