There are rich iron mines around the largest lake, L. Superior in the west.
在最大的湖即西边的苏必利尔周围有着丰富的铁矿。
There are rich iron mines around the largest lake , L . Superior in the west.
在最大的湖即西边的苏必利尔周围有着丰富的铁矿。
The lake level thereafter became deeper than 4 m so that Ruppia L. plants were no longer growing in the middle of the lake.
正是由于湖区夏季风降雨增大,湖水位迅速升高到4米以上,沉水植物川蔓藻从此未能在湖中央生长。
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