短语词组短语planation surfaces 夷平面lateral planation 旁夷作用;侧夷作用Tea Planation 茶叶种植园denudation planation 剥蚀夷平cyclic planation 旋回均夷作用poplar planation 杨树人工林freezing planation 寒冻夷平autocratic planation 独家田庄 返回 planation