Launchpad currently recommends translating gcc-9 in Ubuntu Eoan.

Template "cpplib" in Ubuntu Eoan package "gcc-9"

Language Status Untranslated Need review Changed Last Edited By
Cherokee 100.00  100.0% untranslated 216 216 0 0
Dakota 100.00  100.0% untranslated 216 216 0 0
Hawaiian 100.00  100.0% untranslated 216 216 0 0
Inuktitut 100.00  100.0% untranslated 216 216 0 0
Lakota 100.00  100.0% untranslated 216 216 0 0
Ojibwe 100.00  100.0% untranslated 216 216 0 0
Spanish 002.31  97.6851851852% translated  2.31481481481% untranslated 5 5 0 0 2019-09-10 01:42:43 UTC 2019-09-10 Fco. Javier Serrador
Tlingit 100.00  100.0% untranslated 216 216 0 0
Yiddish 100.00  100.0% untranslated 216 216 0 0
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Template "gcc" in Ubuntu Eoan package "gcc-9"

Language Status Untranslated Need review Changed Last Edited By
Cherokee 100.00  100.0% untranslated 13264 13264 0 0
Dakota 100.00  100.0% untranslated 13264 13264 0 0
Hawaiian 100.00  100.0% untranslated 13264 13264 0 0
Inuktitut 100.00  100.0% untranslated 13264 13264 0 0
Lakota 100.00  100.0% untranslated 13264 13264 0 0
Ojibwe 100.00  100.0% untranslated 13264 13264 0 0
Spanish 029.54  70.4613992762% translated  29.5386007238% untranslated 3918 3918 0 0 2019-09-10 01:56:28 UTC 2019-09-10 Antonio Ceballos Roa
Tlingit 100.00  100.0% untranslated 13264 13264 0 0
Yiddish 100.00  100.0% untranslated 13264 13264 0 0
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Template "libstdc++" in Ubuntu Eoan package "gcc-9"

Language Status Untranslated Need review Changed Last Edited By
Cherokee 100.00  100.0% untranslated 10 10 0 0
Dakota 100.00  100.0% untranslated 10 10 0 0
Hawaiian 100.00  100.0% untranslated 10 10 0 0
Inuktitut 100.00  100.0% untranslated 10 10 0 0
Lakota 100.00  100.0% untranslated 10 10 0 0
Ojibwe 100.00  100.0% untranslated 10 10 0 0
Spanish 100.00  100.0% untranslated 10 10 0 0
Tlingit 100.00  100.0% untranslated 10 10 0 0
Yiddish 100.00  100.0% untranslated 10 10 0 0
[ Change your preferred languages... View template & all languages... ]
Key to this table: “Unchanged” means Translated
and “untranslated” means just that, Untranslated

Other versions of gcc-9 in Ubuntu