在寒冷的气候中，早期的建筑内部很冷，所以人们在室内和室外都戴帽子。

In cold climates, early buildings were cold inside, so people wore hats indoors as well as outside.

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我们可以在室内和室外打篮球。

It is played on both indoor and outdoor courts.

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最后本文在室内和室外对本系统进行了验证实验。

Finally, in the interior and exterior of the experiment the system was verified.

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