Browsing Brazilian Portuguese translation

Translators: This message describes a list in web content for which the
size is unknown. Examples include unlimited scrolling news/article feeds
on social media sites, and message lists on services such as gmail where
you're currently viewing messages 1-100 out of some huge, unspecified
number. Normally Orca announces "list with n items" when the count is
known. This is the corresponding message for the unknown-count scenario.