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.
德克萨斯州人口数量位居各州之首，由430万人增加至2510万人，因此德州在众议院增加四个席位。
Texas gained more people than any other state, up by 4.3m to 25.1m, fetching it four more congressional seats in the House.
据估，中国拥有2.5亿网络用户，网民数量居世界之首。
China has the world's largest online population of any country with an estimated 250 million users.
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