Beginning in 2004 the percentage of the world's population that became ill with TB in a given year flattened and then began a slow decline.

从2004年开始，在给定的年份中全世界因结核病而病倒的人口百分比不再增长，随后开始缓慢下降。

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One possible explanation is that there was a slow decline in the concentration of carbon dioxide in the atmosphere, starting around 3 million years ago.

一个可能的解释是存在一个缓慢的大气二氧化碳浓度的下降，始自3百万年前。

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In 2008, the estimated per capita TB incidence was stable or falling in all six WHO regions. However, the slow decline in incidence rates per capita is offset by population growth.

2008年，结核人均估计发病率在世卫组织所有6个区域中趋于稳定或下降，但是人均发病率缓慢下降被人口增长所抵消。

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While the primary endpoints of the two pivotal studies conducted were not met, a secondary analysis of the data demonstrated that a molecule acting specifically on amyloid-beta can slow cognitive decline in patients with mild AD.

FORBES: Solving The Fatal Puzzle Of Alzheimer's Disease

The bad news is that this looks likely to slow because working-age populations will decline more rapidly than overall populations.

ECONOMIST: Declining populations

That meant spending the past twenty-five years trying to slow the steady decline of my game.

NEWYORKER: Personal Best