subnet子[分支]网络subn.潜艇；替代品vi.替代vt.转包合同substandard land次等级土地subaqueous slump水下滑塌sub-hypergroup子超群subcontract work工程分包subtropical zone副热带,亚热带submedian cercus亚中尾须sub-transferor再转让人subsp. tibialen.指名亚种sublaminar layer层磷层subjacent waters下层水域