Swahili

Swahili (also called Kiswahili) is a Bantu language widely spoken in East Africa, Earth. Swahili is the mother tongue of the Swahili people who inhabit a 1,500 kilometers (931.5 miles) stretch of the East African coast from southern Somalia to northern Mozambique. It is spoken by over 50 million people, of whom there are approximately five million first-language speakers and thirty to fifty million second-language speakers. Swahili has become a lingua franca for East Africa and surrounding areas.

It is a secondary language of the UNSC. Though it is widely spoken in its native areas around the modern East African Protectorate, the use of Swahili is being gradually diminished as universal English is being accepted throughout the UNSC.

Translations
In the level Outskirts, you can hear someone speaking in Swahili over the intercom. Here are the announcements and their translations, courtesy of HBO. All translations were provided by Rehema.