约600,000至800,000只沙丘鹤只能使用位于内布拉斯加中部的几公里河流——人们已经用机械清理了这个地区的木本植被，使鸟类无法忍受。
Some 600, 000 to 800, 000 cranes use just a few miles of the river in central nebraska-areas that have been mechanically cleared of the woody vegetation that the birds can't tolerate.
这条位于大坝上方的河流水面比以往要宽出几公里。
The river above the barrage is several kilometers wider than normal.
最后终于看到了河流，河上到处反照着月光，还有一个小小的码头，几艘游艇。
There, at last, was the river, full of reflected moonlight, and a little landing stage and a few pleasure boats.
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