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单词	DDT
释义	DDT noun ˌdē-(ˌ)dē-ˈtē  : a colorless odorless water-insoluble insecticide C14H9Cl5 that is an aromatic organochlorine banned in the U.S. that tends to accumulate and persist in ecosystems and has toxic effects on many vertebrates Word History Etymology dichlor- + diphenyl + trichlor- (from tri- + chlor-) First Known Use 1943, in the meaning defined above Kids Definition DDT noun ˌdē-ˌdē-ˈtē  : a chemical that was used as an insecticide until it was found to damage the environment Medical Definition DDT noun ˌdē-(ˌ)dē-ˈtē  : a colorless odorless water-insoluble crystalline insecticide C14H9Cl5 that tends to accumulate in ecosystems and has toxic effects on many vertebrates called also chlorophenothane, dicophane
随便看	John Stiles John towhit John Trot John's-wort john's-worts john-a-noakes John-a-Nokes John-a-Stiles john-a-styles John-apple John-go-to-bed-at-noon johnboat johnboats Johne's disease johnnie johnnies johnnies-come-lately johnny johnny collar Johnny Crapaud johnny crapeau nephritic wood nephritides nephritis nephritises

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