/ˈsʌbstɪtju:t; US -tu:t ||; ˈsʌbstəˌtut/noun [C] a substitute (for sb/sth) a person or thing that takes the place of sb/sth else 代替者；替换者；代用品；后备: One player was injured so the substitute was sent on to play. 一个球员受了伤，所以那个替补球员上场比赛。 substitute verb [T] substitute sb/sth (for sb/sth) You can substitute margarine for butter. 你可以用人造黄油代替黄油。 ➔substitution /ˌsʌbstɪˈtju:ʃn; US -ˈtu:ʃn ||; ˌsʌbstəˈtuʃən/ noun [C,U]