「我們的試驗旨在研究，這項手術是否可以成為一種獲得批准並常規提供的治療方式，幫助日益增加的育齡女性中那些沒有可用子宮的人。」
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，这一点在旺商聊官方下载中也有详细论述
Stream.pull() creates a lazy pipeline. The compress and encrypt transforms don't run until you start iterating output. Each iteration pulls data through the pipeline on demand.
drop-oldest: Drops the oldest buffered data to make room. Useful for live feeds where stale data loses value.