You should be able to see your middle exposure layer below coming through.

你可以看到你中等曝光的图片显现出来。

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As a result, the total population was divided into four groups: control (44), low exposure (48), middle exposure (48) and high exposure (48).

因此所调查人群分为四组，其中对照组44人，低暴露组48人，中暴露组48人，高暴露组48人。

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Oregon ranks in the middle third for all of our pollution metrics, including 29th in EPA toxic waste violations and 33rd in toxic exposure, according to the RSEI index.

根据RESI指数，对于我们的污染指标俄勒冈州排名三分之一，包括排名29位的EPA有毒物质排放和排名33位的毒素暴露。

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The notion that Africa's emerging middle classes need more exposure and more encouragement is entirely correct.

BBC: Back to whose reality?

He saw in the Alpha course a way to draw in the young middle classes whose only exposure to the Gospel came at school and smart weddings.

ECONOMIST: The Church of England

They also need to be firm that innovative private sector solutions like Public Private Partnerships and other fully private sector-based investments must be advanced to drastically reduce the exposure of particularly middle income Americans from the high costs of these projects.

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