英语语法分析

The average residue level of DDTs was higher than those in fishes from Britain and Brazil.

多数有机氯农药残留污染的平均水平也高于英国和巴西等国鱼类的水平。

The residual amounts of HCHs and DDTs in soil of Lanzhou area are lower compared with that of other cities.

其他城市相比，土壤中滴滴涕和六六六的残留量较低。

The carcinogenic risks and non-carcinogenic hazard indices of DDTs and HCHs indicated that water in the East Lake was not suitable as water sources for human.

对于人类的致癌风险和非致癌危险系数的评估表明，东湖水体已经不适合作为饮用水源。