inactive level的意思|示意

In the eukaryotic cells, despite how close the regulation elements of active and inactive genes are frequently, they dot not affect each other expression level.

在真核细胞，尽管一些转录活性基因和转录沉默基因的调控序列位置常常非常接近，它们的表达却并不互相影响。

The following CSS removes the border on the second nav level, sets the active subnav to always display, and sets the inactive subnavs to display when their parents are hovered.

下面的CSS样式删除了子菜单上的边框，设置活动的菜单项一直显示，并且设置非活动的菜单项，只在它们的父级菜单被鼠标经过时显示。