The proportion of the low age groups of Chinese carps increased and the advanced age group decreased;

四大家鱼群体结构中低龄鱼比重上升，高龄鱼比重下降；

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In all regions and age groups, girls and women in higher income countries have lower levels of mortality and burden of disease than those who live in low-income countries.

在所有区域和年龄组中，高收入国家的女童和妇女死亡率和疾病负担都低于生活在低收入国家的女童和妇女。

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The benefits of even low levels of physical activity were seen in all age groups, in both men and women, and in people with cardiovascular disease risks.

无论男女老幼，即使是患有心脑血管病的人，开展少量的运动也可以看到带来的好处。

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They also tend to reduce wage disparities between age groups and sexes, since low-paid workers are often young or female.

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In addition to looking at personal characteristics such as age and relationship status, the researchers divided the countries into high- and middle-to-low income groups according to average household earnings.

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