Did they've thoughts about possibly using DDT?

他有考虑用DDT滴滴涕吗?

It warned of the use of a chemical called DDT.

这本书警告用一种名为DDT化学物质。

In 1972 the use of DDT was banned in the United States.

1972年，全美禁用杀虫剂“滴滴涕”。

Like bald eagles, their populations had been killed by widespread DDT pesticide use.

与秃鹰一样，它种群也因滴滴涕杀虫剂广泛用而死亡。

And in 1972, the EPA issued a partial ban on the use of DDT.

1972 年，环保局宣布对滴滴涕有条件禁用。

The letter was the push Carson needed to investigate DDT.

正是这封信促卡森展开了对滴滴涕调查。

DDT and other pesticides had become popular with the public and the government because they were so effective.

DDT和其他杀虫剂受公众和政府欢迎，因为它有效。

And DDT and PCBs two of the most poisonous and long-lasting substances known continue to threaten aquatic wildlife.

滴滴涕和多氯联苯是已知两种毒性和持久性最强物质，它继续威胁水中野生动物。

DDT was originally used during World War II to shield crops from insects and protect soldiers from insect-borne diseases.

二战期间，滴滴涕原本被用于保护庄稼不受虫，并防止士兵患上虫媒传染病。

It was part of a project to control mosquitoes. Many songbirds and harmless insects were killed by the DDT.

DDT是为了控制蚊子，多黄莺和无虫都被DDT杀死。

Rachel Carson did not live to see how her book influenced the government's decision to ban DDT.

蕾切尔·卡逊并没有活着看到自己书籍如何影响政府决定禁止DDT。

The writer blamed their deaths on a pesticide called DDT that exterminators had sprayed on a nearby marsh.

写信认为鸟儿死因与一种叫滴滴涕（DDT）杀虫剂有关，灭虫员将这种药喷洒在了附近沼泽里。

Also, many mosquitoes have developed resistance to DDT.

此外，许多蚊子已经对滴滴涕产生了抗药性。

Did they've thoughts about possibly using DDT?

GUPTA：他有没有想过可能用 DDT？

In spite of this and other mishaps, the US Department of Agriculture and chemical companies extolled the benefits of DDT.

尽管发生了一次又一次意外，美国农业部和化工企业仍然不懈地鼓吹着滴滴涕优势。

Over time, those fields leached DDT and other pesticides into the lake.

随着时间推移，这些田地会将滴滴涕和其他杀虫剂渗入湖中。

She suggested that exposure to DDT might alter the structure of genes, with unknown consequences for future generations.

她还推断滴滴涕可能改变基因结构，对生物体后代造成无法预测后果。

Others objected that Carson hadn't mentioned DDT's role controlling the threat insects posed to human health.

其他则批判卡森对滴滴涕避免体遭受虫功效闭口不言。

People started using DDT to eradicate or kill, destroy, get rid of, a certain kind of ant.

开始用 DDT 来根除或杀死、摧毁、摆脱某种蚂蚁。

By 1972, DDT had been banned in the United States, and yet traces still linger in the environment today.

到 1972 年， DDT 在美国已被禁用，但至今仍残留在环境中。