The island was deserted almost overnight in the mid 1970s when coal reserves ran dry.

1970 年代中期，当时煤矿逐渐枯竭，一夕间，整座岛屿荒芜。

We don't know what they use for energy but maybe they'd value our oil and coal reserves.

我们不知道他们使用什么能源，但也许他们会看重我们的石油和煤炭储备。