Cloning has always been with us and is here to stay.

问题描述:

Cloning has always been with us and is here to stay.
分析一下这句子

主语:Cloning
谓语部分:has always been with us
is here to stay.
并列句,平行结构.
has been 现在完成时,过去到现在一直是
克隆技术一直相伴我们左右,无论过去还是未来.