tau·tol·o·gy英tɔː'tɒlədʒi美tɔː'tɑːlədʒi 基本英英近义反义例句 n.无谓的重复²⁵;重言⁵⁹;累赘¹⁶形容词tautological副词tautologically名词复数tautologies Noun: logic a statement that is necessarily true;
the statement `he is brave or he is not brave' is a tautology
useless repetition;
to say that something is `adequate enough' is a tautology