Launchpad currently recommends translating gcc-7 in Ubuntu Focal.

Template "cpplib" in Ubuntu Focal package "gcc-7"

Language Status Untranslated Need review Changed Last Edited By
Cherokee 100.00  100.0% untranslated 213 213 0 0
Dakota 100.00  100.0% untranslated 213 213 0 0
Hawaiian 100.00  100.0% untranslated 213 213 0 0
Inuktitut 100.00  100.0% untranslated 213 213 0 0
Lakota 100.00  100.0% untranslated 213 213 0 0
Ojibwe 100.00  100.0% untranslated 213 213 0 0
Spanish 000.00  100.0% translated 0 30 30 0 2019-07-06 00:01:03 UTC 2019-07-06 Cristian Othón Martíne...
Tlingit 100.00  100.0% untranslated 213 213 0 0
Yiddish 100.00  100.0% untranslated 213 213 0 0
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Template "gcc" in Ubuntu Focal package "gcc-7"

Language Status Untranslated Need review Changed Last Edited By
Cherokee 100.00  100.0% untranslated 12372 12372 0 0
Dakota 100.00  100.0% untranslated 12372 12372 0 0
Hawaiian 100.00  100.0% untranslated 12372 12372 0 0
Inuktitut 100.00  100.0% untranslated 12372 12372 0 0
Lakota 100.00  100.0% untranslated 12372 12372 0 0
Ojibwe 100.00  100.0% untranslated 12372 12372 0 0
Spanish 022.66  77.3440025865% translated  22.6559974135% untranslated 2803 2803 0 0 2019-07-06 00:02:44 UTC 2019-07-06 Antonio Ceballos Roa
Tlingit 100.00  100.0% untranslated 12372 12372 0 0
Yiddish 100.00  100.0% untranslated 12372 12372 0 0
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Template "libstdc++" in Ubuntu Focal package "gcc-7"

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 000.00  100.0% translated 0 0 0 2017-07-18 17:49:57 UTC 2017-07-18
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-7 in Ubuntu