The progression of the disease can be retarded by early surgery.早期手术可以抑制病情的发展。The heavy rain retarded our progress.大雨妨碍了我们的进展。...a special school for mentally retarded children.为智障孩子设立的特殊学校He was so slow that many though...
He has been an active participant in the discussion.他一直积极参与这次讨论。The engineer was an eager participant in technical co - operation.那位工程师热心参与技术合作.There is no comparison between the knowledge and skill of such a player and ...