什么是以太坊的二层网络(layer2)?layer2有哪些解决方案？什么是arbitrum？如何使用chainlink在arbitrum Goerli测试网上构建和部署获取比特币的美元价格智能合约？
Synopsis
什么是以太坊的二层网络(Layer2)？ 当前Layer2有哪些解决方案？ 什么是Arbitrum？ 如何使用ChainLink在Arbitrum Goerli测试网上 ...
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