Click to check for on-line updates of all installed extensions. To check for updates of the selected extensions only, choose the Update command from the context menu. The check for availability of updates starts immediately.
单击检查所有已安装的扩展的联机更新。如果只为选定的扩展检查更新，请从上下文菜单中选择“更新”命令。立即开始检查是否有可用更新。