相关单词同义词elementary, basic, fundamental, essential, primary, 近义词 original 原始的, organic 器官的, classic 杰作, fundamental 基本的, basic 基本的, elementary 基本的, simple 简单的, undeveloped 未开发的, primary 首要的, vestigial 痕迹的, underlying 潜在的临近词rue, rude, Rudimentary leg, rudimentary rib, rudimentary web, rudimentary set, Rudimentary eye, Rudimentary arm, rudimentary bone, rudimentary seed, rudimentary horn, rudimentary teat相似词rudder, rudderless, ruddy, rude, rue, rue the day idiom, rueful, ruff, 返回 rudimentary