短語詞組短語mechanically built level terrace 機(jī)修水平梯田built t terrace 浪成階地marine -built terrace 海成階地;海建臺地wave built terrace 波成階地;波成臺地stream built terrace 河流堆積階地newly -built terrace 新梯田built -up p terrace 堆積階地stream -built terrace [地理]沖積階地 返回 built terrace