不久前，一比特币价格不到一美元，但在近几个月中，它的价格上升到8美元，然后到20美元，然后超过30美元，后来又回落到18美元这个当前价位。
Not long ago a single Bitcoin sold for less than a dollar, but in recent months the price climbed to $8, then to $20, then above $30, before falling back to $18, the current level.
一些人已经在积聚比特币，期望比特币泡沫将每个比特币的价格推高到数百，甚至数千美元。
Some already are hoarding Bitcoins, expecting a Bitcoin bubble will drive the value up to hundreds, maybe even thousands of dollars per coin.
近些天，中国比特币交易所的比特币价格比美元交易所的大约高3%，这表明中国的需求大于其他地方。
In recent days, the price of a Bitcoin has been about 3 percent higher on these exchanges than on dollar denominated exchanges, suggesting more demand in China than outside.
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