名词
中文翻译：主要语言
同义词：
['native language', 'official language']
例句：
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1.The country's principal language is English.
该国的主要语言是英语。
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2. Many people use their native language in daily communication.
许多人在日常交流中使用他们的母语。
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3. The government has made efforts to promote the use of the official language in public services.
政府已经努力在公共服务中推广使用官方语言。