less developed mentally than is normal for a particular age synonym backward遲鈍的;弱智的;智力發育遲緩的 Many of the children are severely retarded. 很多孩子都反應遲鈍。 a mentally retarded child 智障的孩子
Oxford Collocations Dictionaryverbs- be
- look
- severely
- mildly
- slightly
- …