noun🔗Share替代，替换。 The act of substituting or the state of being substituted."The substitution of the teacher for the week was announced on the school website. "学校网站上公布了这周代课老师的安排。processactionsystemChat with AIVocabulary GamePractice Reading
noun🔗Share替代，代替。 A substitute or replacement."The teacher announced a substitution for the absent Mr. Smith. "老师宣布了代替缺席的史密斯先生的代课老师。systemprocessactionChat with AIVocabulary GamePractice Reading
noun🔗Share取代，置换 The replacement of an atom, or group of atoms, in a compound, with another."The recipe called for butter, but I made a substitution and used margarine instead. "食谱上要求用黄油，但我做了替换，用了人造黄油代替。chemistrycompoundChat with AIVocabulary GamePractice Reading
