词汇	lesser covert
释义	lesser covert 小履羽
随便看	tree stock tree storage representation trees transformation Trees transplant tree strata tree stratum tree strike treestring tree string structure tree-string structure tree structural system tree structure tree-structure tree structu re tree structure analysis tree structured Tree-structured tree structured architecture tree-structured architecture tree structure database machine tree-structured codebook treestructured computer communication system tree structured database tree-structured diagram tree structured directory