代入
Substitute \Sub"stit"ute\, v. t. [imp. & p. p. {Substituted}; p. pr. & vb. n. {Substituting}.] [See {Substitute}, n.] To put in the place of another person or thing; to exchange. Some few verses are inserted or substituted in the room of others. --Congreve.
substituting n : working as a substitute for someone who is ill or on leave of absence [syn: {subbing}]