这让如今的法学院毕业生平均承担10万美元的债务，居本科生债务之首。

This leaves today's average law-school graduate with $100000 of debt on top of undergraduate debts.

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中国的湿地保护非常重要，中国的湿地面积达6590万公顷，占世界湿地面积的10%，湿地面积居世界第四。

Protection of wetlands in China is very important, as China has wetlands with 65.9 million hectares, 10 percent of the world's wetland areas, which comes fourth in the world.

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尽管栖息地容易遭到破坏，但大天鹅仍以18万只的种群数量冠居天鹅家族之首，而且其栖息范围也超出了其他种类的天鹅。

With a population of about 180,000, the whooper, though vulnerable to loss of habitat, is among the most abundant of swans and trumps others in the sweep of its range.

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