单词	upper ridgeupper-level ridge
释义	upper ridgeupper-level ridge 高空嵴
随便看	alternation of seasons alternation of signs Alternation of slope and terrace alternation of slops and terrace alternation of strata alternation of studies alternation of time alternation of V A conduction time alternation of V-A conduction time alternation of wetting and drying alternation of working and learning alternation operator alternation optimum alternation pattern alternation policy alternation priority alternation problem alternation procedure alternation ranking method alternation rate map alternation response alternation response method alternation rule alternation rules alternations of generations