This is fundamentally different from Web streams' pipeThrough(), which starts actively pumping data from the source to the transform as soon as you set up the pipe. Pull semantics mean you control when processing happens, and stopping iteration stops processing.
if (chunks === null) {
，这一点在im钱包官方下载中也有详细论述
"[There are] a lot of new faces tonight, which is quite upsetting because the more people we think we get off the streets, the more people are coming on the streets."
5个男人下沟，步步紧逼，围住那头滚落的牛犊，不料牛一跃而起，冲上了山沟另一侧的坡面，后又重心不稳，再次被黄土裹着滚下了沟。“牛娃太可怜了，不敢瞅”，老爸心凉了，他背过身，不想看牛摔死在他面前。一旁的九爷也吓得转身不看。
Украинский лидер в интервью Sky News заявил, что с удовольствием принял бы ядерное оружие от Франции или Британии. Однако, по его словам, Киеву не поступали такие предложения.