rill的例句（rill在句子中的用法）

• A bridge spanned the rill. 一座桥横跨小河。
• The surface shows deep rill - like folds. 表面有深沟槽 状 起伏褶皱.
• From a practical standpoint, rill erosion forms small channels. 从实用的观点看, 细沟侵蚀能形成很小的渠槽.
• A ditch diverted water from the rill into the fields. 一条沟渠把水从河里引向田间.