基本解释adj.无效的;无用的同根派生futilely adv. 无益地,无效地,无用地futileness n. 无益,无效,无用futilely相关词英汉例句用作形容词 (adj.)用作表语: S+be+~Their efforts to revive him were futile.他们对他抢救无效。futilely更多例句