the alternation of two or more different forms in the life cycle of a plant or animal
同义词：alternation of generations, heterogenesis
xenogenesis详细解释
xen.o.gen.e.sis n.（名词）The supposed production of offspring markedly different from either parent.异种生殖：生出与父母体完全不同的机体的假想See alternation of generations 参见 alternation of generations 【引伸】 xen.ogenet.ic
