abbr.滴滴涕（杀虫剂），二氯二苯三氯乙烷（=Dichloro-Diphenyl-Trichloroethane）
DDT molecules in water tend to migrate to the surface. 在水中滴滴涕分子趋向于向水面移动。
It would be tempting to think that the lessons of DDT have been heeded. 它将容易让人想起曾令人关注的滴滴涕教训。
