变厚的动脉壁使流通血液的管腔变细。

The thickened artery wall narrows the channel through which the blood flows .

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你知道怎样使腰围变细吗？

Do you know how to slim the waist?

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硅的存在使平均粒度变细。

Average particle size became fine in the present of silicon.

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硅的存在使平均粒度变细。

Average particle size became fine in the present of silicon.

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