相关单词同義詞rear, fro, 近義詞 back back away from, in reverse臨近詞backwater, backward, backwardsurging, backwards deletion, backwards analysis, backwards compatible, backwards determinism, backwards high-jump, backwards and forwards, Backwards and forwards on sth, backwards displacement of iris, Backwards compatible solder joint相似詞backup software, backward, backward compatible, backward-looking, backwash, backwater, backyard, bacon, 返回 backwards