Population growth is decreasing by 1.4% each year.
人口增长每年下降1.4%。
There has been a progressive decrease in population every year in this city.
这个城市的人口在逐年递减。
When a city's population grows by 5% a year, it is difficult to keep up.
当一个城市的人口以每年5%的速度增长时，基础设施很难跟得上。
By last year, the Yellowstone wolf population had grown to more than 170 wolves.
直到去年，黄石国家公园的狼群数量已经增长至超过170匹。
The population grew by about 5% a year for decades.
几十年来人口增长了大约5%。
During that period the world's population was growing by an average of 1.8% a year.
在此期间，世界人口增长了每年1.8%。
The nation's population continues to rise at a speed of 12 million per year.
这个国家的人口持续以每年1200万人的速度增长。
The official population is 5, 300, but it decreases by a hundred every year.
官方统计的人口为5300人，但是每年以一百的速度递减着。
The world's population is expected to reach seven billion people this year.
世界人口今年有望达到70亿。
India's millionaire population grew 23% last year, the fastest in the world.
去年印度的百万富翁增加了23%，增幅居全球之冠。
Japan's population fell by a record figure last year.
日本去年的人口下降指数创历史记录。
The population decreased a lot last year.
去年人口数量急剧下降。
The world population will pass seven billion by the end of this year.
到今年末，世界人口将超过七十亿。
All this promises a still faster growth in the pig population this year.
这一切表明今年生猪存栏数会有更快的增长。
Each year park rangers count the elephant population.
公园的管理员们逐年统计象的总数。
This year, planet Earth will reach a new population milestone.
今年地球将会迎来人口数量的一个新的里程碑。
Last year the world's population reached 6 billion.
去年，世界人口达到了60亿。
Last year alone, the resident population fell by 444.
仅仅是去年，常住居民人数就减少了444人。
The population of this town increased by 10 percent last year.
增加；繁殖。城镇的人中去年增加了二十万。
The population of this town increased by 10 percent last year.
增加；繁殖。城镇的人中去年增加了二十万。
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