单词	pneumatophore
释义	pneumatophore noun pneu·​mat·​o·​phore nu̇-ˈma-tə-ˌfȯr  nyu̇- 1 : a muscular gas-containing sac that serves as a float on a siphonophore colony 2 : a usually partially exposed root of a wetland plant (such as a mangrove) that functions especially in the intake of oxygen from the atmosphere Example Sentences Recent Examples on the Web The arrangement of these pneumatophores can help scientists tell pterosaur species apart. Michael Greshko, National Geographic, 10 Sep. 2019 Word History Etymology International Scientific Vocabulary First Known Use 1859, in the meaning defined at sense 1
随便看	negroes negroest negrohead negrohead beech negroid negroidder negroiddest negroider negroidest negroids negroism negroisms negroize negroness negronesses negroni negronis negrophil negrophile negrophiles negrophilism negrophilisms negrophilist negrophilists negrophils

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