to come into existence造句

1、To come into existence as a claim that is legally enforceable
权利产生产生，如具有法律强制性的主张

2、To come into existence as a claim that is legally enforceable.
权利产生产生，如具有法律强制性的主张

3、What genetic change allowed multicellular animals to come into existence remains obscure.
什么样的遗传突变产生了多细胞的动物还不清楚。