易混淆的单词： ddt

What was not known at the time , however , was ddt 's propensity to accumulate , persist and damage the environment .

然而在那时没有人知道，滴滴涕有富集性，稳定性并且破坏环境。

Assessing ecological risks of ddt and lindane to freshwater organisms by species sensitivity distributions .

应用物种敏感性分布评估ddt和林丹对淡水生物的生态风险。

However , as early as the 1940s scientists had begun expressing concern over hazards associated with the use of ddt , and extensive research has since implicated the organochlorine insecticide in the poisoning of humans , animals and the environment .

然而，早在1940年代，科学家们就开始关注与滴滴涕打交道造成的危险，并广泛研究了有机氯杀虫剂被大量使用之后对人类、动物和环境造成的毒害。

Three months later , after reviewing dozens of studies , a panel of experts told the world health organization that " cell phones may cause brain cancer , " putting them in the same category at engine exhaust and ddt .

三个月后一个专家小组，在审查几十份研究报告之后，对世界卫生组织声明：“手机会使人患脑癌”，并把它与发动机排气与滴滴涕划为同类。

Conclusion the tested wild strains had resistances to all 3 kinds of insecticides but their resistance factors to ddt were close to the normal strain .

结论现场品系对3种杀虫剂均产生了不同程度的抗性，但滴滴涕的抗性指数接近于正常品系。