Witnesses in Kabul and Kandahar, the southern Afghan city, reported explosions and jets overhead until dawn, while the Taliban government said later that Pakistani surveillance aircraft were still flying over Afghanistan.
tee() splits a stream into two branches. It seems straightforward, but the implementation requires buffering: if one branch is read faster than the other, the data must be held somewhere until the slower branch catches up.
，详情可参考heLLoword翻译官方下载
經歷了接近半年時間的監禁，對關恆來說，這也加深了他對自由的感受。關恆說，過去在中國的時候，「我只是覺得被關到監獄、失去去自由其實是一個非常可怕的事情，但是具體有多可怕，我感受不到，我也不能完全想象到。」直到第一次真切地感受到失去人身自由之後，他才更意識到自由的重要性。
Backpressure — the ability for a slow consumer to signal a fast producer to slow down — is a first-class concept in Web streams. In theory. In practice, the model has some serious flaws.。51吃瓜对此有专业解读
从这里可以看出骗子的操作节奏之精准，令人不寒而栗。
By Will Standring and Alice Gledhill，这一点在safew官方下载中也有详细论述