The U.S. bacterial limit is no more than 500 colony-forming units of bacteria per milliliter of water.

美国的细菌数量上限是每毫升水不超过500个菌落形成单位。

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Shopping cart handles led the way with 1100 colony forming units of bacteria per 10 sq cm, followed by a mouse used on computers in Internet cafes, which had an average of 690 colony forming units.

商店购物车扶手上的细菌最多，每10平方厘米(1.55平方英寸)就聚集着1100个菌落；其次是网吧的鼠标，每10平方厘米就有690个菌落。

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The U.S. bacterial limit is no more than 500 colony-forming units of bacteria per millilitre of water.

美国的细菌限制标准是 毫升 的水中不含有超过500菌落的细菌。

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