We were building a hydro-electric station last winter.
去冬我们在修水电站。
We've arranged a visit to a hydro-electric power station for this afternoon.
我们安排好今天下午参观一个水电站。
The hydro - electric power stations were started last year.
这些水电站是去年办起来的。
I think hydro electric power stations are much safer than nuclear power stations.
我认为水电站比核电站要安全得多。
I think hydro electric power stations are much safer than nuclear power stations.
我认为水电站比核电站要安全得多。
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