一年前，很少有银行家了解比特币区块这种跟踪比特币交易的公共分类账簿。
Few bankers had so much as heard of the block chain-a public ledger that tracks all Bitcoin transactions-a year ago.
一年前，很少有银行家了解比特币区块这种跟踪比特币交易的公共分类账簿。
Few bankers had so much as heard of the block chain-a public ledger that tracks all Bitcoin transactions-a year ago.
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