陈细松回答:网友采纳 n.潜水艇;地铁;替补队员vi.代替[过去式subbed过去分词subbed现在分词subbingsub英文词缀:向下的意思例词:subway地铁submarine潜水艇短语subsubscription订阅;代替SUBSHARP副锐度subassembly局部装配;分...