Exploration into the causes of prison privatization in the U. S. will help us to estimate the future of private prison movement.

探究美国监狱私有化的原因，有助于估计私人监狱运动的发展前景。

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In the U. S., rapid growth of prison population, overcrowding and cost problems are the driving force behind the prison privatization phenomenon.

美国监狱私有化现象的主要动因在于快速增长的囚犯、监狱过度拥挤和成本问题。

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She has also traveled to Abu Dhabi to report on the pre-planned sustainable city Masdar, tasted wine made by robots in California's Napa Valley, explored four space capsules, covered the privatization of space at NASA's Kennedy Space Center, and gone behind the bars of San Quentin Prison to see how the institution taught inmates to make mini satellites.

CNN: CNN Profiles - Rachel Crane - Correspondent