in·fill /ˈɪnfɪl/ noun [uncountableU] especially British EnglishBrE 1 something that is used to fill a space 填充物,空隙填料 2 the process of filling a space, especially by building new houses 空间填补〔尤指建新房〕 infill developments 市区空地上新房的添建
—infill verb [intransitiveI, transitiveT]