Then when West Virginians discovered coal, they moved away from their farm-based economy and became the United States's largest producer of the black stuff.

而当它发现本地蕴藏着大量的煤矿时，他们又一改以往的以种植业为主的经济模式而转变成美国最大的煤炭基地。

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Then when West Virginians discovered coal, they moved away from their farm-based economy and became the United States's largest producer of the black stuff.

而当它发现本地蕴藏着大量的煤矿时，他们又一改以往的以种植业为主的经济模式而转变成美国最大的煤炭基地。

youdao