To get extensions users are required to search, download and install over the countless Internet sites.

为了获得扩展，用户需要在不计其数的网络站点中搜索、下载和安装。

youdao

To get extensions users are required to search, download and install over the countless Internet sites.

为了获得扩展，用户需要在不计其数的网络站点中搜索、下载和安装。

youdao