In this way, DDT before it was banned reached levels high enough to seriously disrupt the re production of many birds in North America, especially hawks, owls, and eagles.
英
美
- 通过这种方式,DDT在被禁止之前其含量已经很高,足以严重破坏北美许多鸟类的繁殖,尤其对于鹰和猫头鹰的破坏更为严重。