substitution
英 [s?bst?'tju??n]
美[,s?bst?'tj???n]
- n. 代替；[數(shù)] 置換；代替物
英英釋意
- 1. an event in which one thing is substituted for another;
- "the replacement of lost blood by a transfusion of donor blood"
- 2. the act of putting one thing or person in the place of another: "he sent Smith in for Jones but the substitution came too late to help"