短语词组短语spur -dike 丁坝Spur -dike flow 丁坝水流open spur -dike 开口丁坝scour around spur -dike 丁坝冲刷the length of spur -dike 丁坝长度ended spur dike 勾头丁坝spur dike head region 坝头区spur dike WESTBANK 丁坝circumfluent spur dike 绕流丁坝 返回 spur dike