西部有相当一部分城市属于矿业城市。

Many cities in the west are mining cities.

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美国西部的采矿业是美国西部开发的重要组成部分之一。

American western mining is one of the most important events in American western exploitation.

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目前矿业也已经成为西部地区重要的支柱性产业。

At present, the mining industry has already become a mainstay in Western China.

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目前矿业也已经成为西部地区重要的支柱性产业。

At present, the mining industry has already become a mainstay in Western China.

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