1.〈美〉(丘陵间的)低地,平地;(适于耕作的)河滩地
1.in New England and the Maritime Provinces of Canada, a piece of low-lying land between hills or along a river
1.Study of Feedback Structure on Ecosystem in Intervale Region of South China
红壤丘陵区生态系统反馈结构研究