A lot of natural resources in the mountain area are to be exploited and used
A lot of natural resources in the mountain area are to be exploited and used
正确答案：那个山区有许多自然资源有待于开发利用。
A lot of natural resources in the mountain area are to be exploited and used
正确答案：那个山区有许多自然资源有待于开发利用。
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