(noun.) a person or thing that takes or can take the place of another.
(noun.) an athlete who plays only when a starter on the team is replaced.
(verb.) put in the place of another; switch seemingly equivalent items; 'the con artist replaced the original with a fake Rembrandt'; 'substitute regular milk with fat-free milk'; 'synonyms can be interchanged without a changing the context's meaning'.
(verb.) be a substitute; 'The young teacher had to substitute for the sick colleague'; 'The skim milk substitutes for cream--we are on a strict diet'.
(verb.) act as a substitute; 'She stood in for the soprano who suffered from a cold'.
手打:维吉尔
校对:塞勒斯特