MetaForce佛萨奇系统开发，【I88合约1928开发8024】，区块链技术不依赖额外的第三方管理机构或硬件设施，没有中心管制，除了自成一体的区块链本身，通过分布式核算和存储，各个节点实现了信息自我验证、传递和管理。去中心化是区块链突出本质的特征。

　　区块链，就是一个又一个区块组成的链条。每一个区块中保存了一定的信息，它们按照各自产生的时间顺序连接成链条。这个链条被保存在所有的服务器中，只要整个系统中有一台服务器可以工作，整条区块链就是安全的。这些服务器在区块链系统中被称为节点，它们为整个区块链系统提供存储空间和算力支持。

　　I’m going out shopping,and won’t be back until about 5:00 pm.I have taken with me the two books you asked me to return to the city library.At about 1 o’clock this afternoon,Tracy called,saying that she couldn’t meet you at Bolton Coffee tomorrow morning as she has something important to attend to.She felt very sorry about that,but said that you could set some other time for the meeting.She wanted you to call her back as soon as you are home.She has already told Susan about this change.