基本解释n.尖点蔓叶线同根派生 英汉例句oblique cissoid 斜蔓叶线cuspidal cissoid 尖点蔓叶线crunodal cissoid 结点蔓叶线acnodal cissoid 孤点蔓叶线ancodal cissoid 孤点蔓叶线