社会经济状况、公厕密度、人口密度以及研究年份都未对患病风险产生重大影响。

Neither socioeconomic status, latrine density, population density nor study year had a significant influence on disease risk.

youdao

这样一项协议必须包含三个基本要素：大幅削减富裕国家的二氧化碳排放量，同时抑制新兴经济体增长的碳密度；

There are three essential elements to such a bargain: deep cuts in the CO2 emissions of rich countries alongside curbs on the carbon-intensity of growth in rising economies;

youdao

他希望将他的市民都聚集起来，而不是鼓励人们离开这个地方，促进地区的人口密度在经济上依旧是可行的。

He would like to concentrate his citizens, boosting the population density in areas that are still economically viable, while encouraging people to move out of districts that are not.

youdao