T: 官方 S: 官方 [guan1 fang1] = official (adj), of government, authoritative
英文是奈及利亞的官方語言。
英文是奈及利亚的官方语言。
ying1 wen2 shi4 nai4 ji2 li4 ya3 de5 guan1 fang1 yu3 yan2.
English is the official language of Nigeria.
https://www.learnwitholiver.com/chinese/daily-sentence-2459