基本解释环节同根派生 英汉例句Each column undulated and swelled like the ring of a polyp.每个分队都蜿蜒伸缩，有如腔肠动物的环节。It was the sole profane ring which was linked to that devout chain of convents.这是混迹于这一由修道院组成的虔诚链条中仅有绝无的世俗环节。