noun 下载 🔗分享 替代，替换。 The act of substituting or the state of being substituted. Examples : "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。 process action system 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 替代，代替。 A substitute or replacement. Examples : "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。 system process action 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 取代，置换 The replacement of an atom, or group of atoms, in a compound, with another. Examples : "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。 chemistry compound 与AI对话词汇游戏阅读练习
