official language

基本解释

“You cannot rebrand your country any better than this,” the article began, in English, the country’s official language.
“再也没有比这能更好地推广国家形象的事情了，”文章用国家的官方语言英语这样开头。
Such cases include a Brooklyn surrogate court’s definition of the Jewish marriage ceremony and the Iowa Court of Appeals’ declaration that French is the official language of the Republic of Guinea.
这样的案例包括布鲁克林代理人法庭对犹太婚礼庆典的定义以及爱荷华州上诉法庭就几内亚共和国的官方语言是法语的论断。
The government considered but discarded the idea of making German the official language.
政府考虑过后，却放弃了使德语成为官方语言的想法。

This happens when an official language is used more often and children stop learning the local language of their parents.
It's as if a gap has opened up, a gap between the official argument of and the rhetorical figures or the metaphors, Milton's elaborately construed language, which he uses to illustrate that argument.
这就像是一个鸿沟在专著中的正式论点,和运用修辞和比喻的部分之间打开了，弥尔顿精心地解释和分析他用来，阐述这个论点的语言。
耶鲁公开课 - 弥尔顿课程节选
English became the official language of Hawaii.

Knowledge of another UN official language (Arabic, Chinese, Russian, or Spanish) would be an added advantage.
UNESCO: Vacancy : Secretary of The International Geoscience Programme, Chief of Global Earth Observation Section (24/5/2011) (SC 330 - (P5))

官方语言
Being an international language and acting as official language in many countries, English language itself has shown great significance in international trade and communication.
作为一种国际语言和许多国家的官方语言,英语在国际贸易和交往合作领域中扮演者极其重要的作用。