Home/exineexine/ek-seen, -sahyn/US // ˈɛk sin, -saɪn //UK // (ˈɛksɪn, -aɪn) //祛斑,祛痘,祛病,祛斑剂Definitionsn.名词 noun1 Botany.: the outer coat of a spore, especially a pollen grain.Level 4Browse all words →