听wood说 Polkadot是下一代区块链 统一整个网络的协议 专门构建的区块链，允许它们 在规模上无缝地运作。 Because Polkadot allows any type of data to be sent between any type of blockchain, it unlocks a wide range of real-world use cases. By bringing together the best features from multiple specialized blockchains, Polkadot paves the way for new decentralized marketplaces to emerge, offering fairer ways to access services through a variety of apps and providers. While blockchains have demonstrated great promise in several fields—Internet of Things (IoT), finance, governance, identity management, web decentralization, and asset-tracking to name a few—design limitations in previous systems have largely hindered large-scale adoption. Polkadot’s design offers several distinct advantages over existing and legacy networks, including heterogeneous sharding, scalability, upgradeability, transparent governance and cross-chain composability. Because Polkadot allows any type of data to be sent between any type of blockchain, it unlocks a wide range of real-world use cases. By bringing together the best features from multiple specialized blockchains, Polkadot paves the way for new decentralized marketplaces to emerge, offering fairer ways to access services through a variety of apps and providers. While blockchains have demonstrated great promise in several fields—Internet of Things (IoT), finance, governance, identity management, web decentralization, and asset-tracking to name a few—design limitations in previous systems have largely hindered large-scale adoption. Polkadot’s design offers several distinct advantages over existing and legacy networks, including heterogeneous sharding, scalability, upgradeability, transparent governance and cross-chain composability. 因为Polkadot允许任何类型的数据 在任何类型的区块链之间发送，它 解锁大量真实世界的用例。 通过把最好的特性汇集在一起 多个专门的区块链，Polkadot 为新的权力下放铺平了道路 市场将会出现，提供更公平的方式 通过各种应用程序访问服务 和提供者。 而区块链已经证明 在几个领域都有很大的前景——互联网 物联网、金融、治理、身份认同 管理，web去中心化，和 比如资产跟踪——设计 以前系统的局限性在很大程度上 阻碍了大规模采用。 Polkadot的设计有几个独特之处 相对于现有和遗留网络的优势， 包括异构分片，可伸缩性， 可升级性，透明的治理和 过渡链可组合性。