例句與造句

1. Particular attention is given to the matter of surface erosion, overtopping prevention and protection of levee crest and downstream slope.
2. The levee crest is the highest point of the external levee, and runs parallel to the course of the channel-belt, separating the external levees into outer external levees and inner external levees.
3. It's difficult to find levee crest in a sentence. 用levee crest造句挺難的