The shift in the microbial makeup had led to this shrinkage.

在微生物组织方面的改变导致了这种组织薄层的缩减。

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And this shrinkage speeds up as we grow older, foreshadowing memory problems and dementias like Alzheimer's disease.

这种收缩随着我们年龄的增长会加速，这就是出现记忆力问题和像阿耳茨海默氏病这样的老年痴呆症的征兆。

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The researchers don't suggest any specific reasons for this shrinkage, but they do point out that they can now rule out one possibility for sure: technology.

研究人员没有给出具体原因，但他们明确指出这绝非科技进步的结果。

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This shrinkage coincides with a period of prolonged drought in eastern Africa, and was probably caused by it.

ECONOMIST: Human evolution: Before the exodus | The

They swiped this figure from the San Francisco Fed to show that this shrinkage is a new trend.

FORBES: The Still Shrinking Local Governments

Does anyone really believe that the retail sector can flourish with this shrinkage?

FORBES: The Inside Scoop On Why A Double-Dip Is (or Is Not) Just Ahead