同时存在

With the quincunx as well, it can be difficult to merge the energies of the planets involved.

她觉得者角色不能同时存在，而同时间个这样角色会令她不舒服。

The evolvement from orderless to ordered and the degenerate from orderless to ordered are exiting synchronously in the nature.

自然界存在着无到有进化，同时也存在有到无化。