It was the shortage of food supplies that forced Houston and Petzoldt to return to lower altitudes.

由于食物供给短缺，迫使休斯顿和匹兹荷迪特返回较低的海拔高度。

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It was the shortage of food supplies that forced Houston and Petzoldt to return to lower altitudes.

由于食物供给短缺，迫使休斯顿和匹兹荷迪特返回较低的海拔高度。

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