downgradevt. 降低、貶低n. 下坡a. 下坡adv. 下坡學術名詞降級:資訊、機械工程下坡:機械工程下坡度:機械工程降等:工業工程降低保密等級:海事英文釋義the property possessed by a slope or surface that descendsrate lower; lower in value or esteem