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.
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一位中國留學生，在美國德州當上了牛仔。。业内人士推荐新收录的资料作为进阶阅读
Resident doctors are qualified doctors who have completed a medical degree.
，这一点在新收录的资料中也有详细论述
В России изменились программы в автошколах22:30，更多细节参见新收录的资料
但游艇产业高波动、重资产、长周期的特性，一旦叠加多元化扩张失误，风险便集中爆发。