Samuel estimated that it would take about seventy-two hours for the culture of bacteria to develop in Ferd.

塞缪尔估计，大概要经过七十二小时，在菲德身上的培养菌才能发育起来。

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Samuel estimated that it would take about seventy-two hours for the culture of bacteria to develop in Ferd.

塞缪尔估计，大概要经过七十二小时，在菲德身上的培养菌才能发育起来。

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