习惯吸烟的人口比重随年龄的增长而上升。

The proportion of regular smokers increases with age.

《牛津词典》

街道随年龄增长变得更加危险，而学校和家庭则更加安全。

The street became more dangerous with age, while school and home became safer.

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对于储藏的血液而言，情形更是如此，因为红细胞随年龄增长而日益失去灵活性，也就越来越难以挤到毛细血管里。

And that is doubly true of the cells in stored blood since red blood cells become less flexible with age, and thus less able to squish into capillaries.

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