相关单词同义词elementary, fundamental, essential, primary, first, foundation, element, base, bed, factor, 近义词 elementary, essential, foundational, fundamental, key, primary, prime反义词accompanying, complementary, supplementary, supporting, unessential临近词basics, bashful, basica, Basicas, basicole, basicyte, basic to, basicity, basic AS, basically, basic FAR, basic-q相似词bash on, -basher, bashful, bashing, basically, basics, basil, basilar, 返回 basic