Translations:Extension:Scribunto/Lua reference manual/2490/en

The unit names in  may be specified in any order (currently in English only, indendantly of the language object used, and with their plural unabbreviated form only like in the returned table, where unit names are symbolic but still not translated and not grammatically changed according to their assigned value). If the input table contains only unsupported unit names, the returned table will be empty. If the input table is not specified, is nil, or is empty, a static table for any supported units (including 'seconds' for the shortest unit) will be used by default.