现在，私营企业可以经营学校和医院。

Private firms may now run schools and hospitals.

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因此，成百上千的企业、医院和大学正在使用无线光通信。

As a result, hundreds of businesses, hospitals and universities are already using FSO.

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而电信公司，医院和商业企业通常都有应急预案来应付停电或者洪水等突发事件。

And telecoms firms, hospitals and businesses usually have contingency plans to deal with power failures or flooding.

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