substitute /ˈsʌbstitju:t/ I. n. c 代用品,代替者:use plastics as a substitute for wood 用塑料作木材的代用品 There’s no substitute for parents. 父母亲没有别人可以替代。 ‖II. vt. & vi. 代替,代以:substitute A for B 用甲来代乙 Mr. Johnson substituted for the teacher who was in hospital. 约翰逊先生代替生病住院的教师。

[辨析]replacedisplace辨见replace