At present a greater hazard to the water body is man-madepollution.
当前对水体危害较大的是人为污染。
2
Arsenic pollution is becoming an more and more serious environmental and social problem. Now man-madepollution is the most severe.
砷污染越来越成为一个严重的环境问题和社会问题，目前最为严重的正是人为的污染。
3
A scientific team in California used unmanned aircraft to measure heat in the atmosphere above the Indian Ocean, a part of Asia often blanketed by brown clouds of man-madepollution.