But this cannot be done while the original product subsists .

但在原来的产品存在时，却无法做到这一点。

But this cannot be done while the original product subsists ;

但在原来的产品存在时，却无法做到这一点；

There 's even a variety that subsists on the slime left by snails .

有一个金龟变种甚至靠蜗牛留下的粘液来生存。

The hinge is that the enterprise subsists on suiting the development of data communication .

适应数据通信的发展是通信企业生存的关键。

Some doubt still subsists in his mind .

他头脑中还是有些疑虑。