相关单词同義詞retarded, inverted, contrary, counter, 近義詞 behind, dull, hesitant, late, shy, slow反義詞advanced, forward臨近詞backwards, backup, backwardi, backwardly, backwarder, backward pig, backward set, backwardness, backward jet, backward fall, backward edge, backward echo相似詞backtick, backtrack, backup, backup software, backward compatible, backward-looking, backwards, backwash, 返回 backward