其次是血液相容性。血液是非常脆弱的流体。泵体内的叶轮以每分钟数千转的高速狂飙，如果设计不当、剪切力过大，会把红细胞无情“绞碎”，导致致命的溶血；反之，如果流道设计存在死角，血液哪怕有零点几秒的淤滞，就会迅速形成血栓。一旦血栓脱落进入大脑，瞬间就会导致患者脑卒中。
Consider what would happen if we really did delete the keys from the map, rather than leaving a tombstone. Here’s a playground where peers can add keys, but not delete them. Can you figure out how to get a peer to delete a key?，推荐阅读爱思助手下载最新版本获取更多信息
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不过完美日记的“哑火”并非一朝一夕，而是有一条清晰可查的下行曲线。
The men, who had been released after completing criminal sentences, are from Cuba, Jamaica and Yemen，推荐阅读PDF资料获取更多信息
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