2. 分区：小于pivot的放左边，大于的放右边
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"We've also got these big tanks full of oxygen and nitrogen, which are mixed to make air, and also water, so that we can provide everything that the astronauts need in the crew module to keep them alive on their journey."，详情可参考safew官方版本下载
"It's a very interesting piece of evidence of textile advancements in the Anglo-Saxon period," said Willow Major, a post-excavation assistant.