There are plenty of situations in which a fixed element (such as persistent navigation) could serve the owner’s business objectives and make the website more usable.

很多情况下，固定的元素（如固定不动的导航条）可以为目标客户更好服务，网站也更加实用。

youdao

There are plenty of situations in which a fixed element (such as persistent navigation) could serve the owner’s business objectives and make the website more usable.

很多情况下，固定的元素（如固定不动的导航条）可以为目标客户更好服务，网站也更加实用。

youdao