同时骑两个自行车is very easy. I did it all the time when I was in Beijing.
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送交者: OO8 于 2011-03-08, 19:07:45:
回答: 哈哈，难度不低于同时骑两个自行车2,3十里， 由 3747 于 2011-03-08, 16:59:28:
although I may have difficulty to ride only one bike now, I surely have ridden two bikes for 2,3十里 before.
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