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The working languages of the conference are English and Chinese.
本次会议的主要工作语言是英语，辅助工作语言是汉语。
youdao
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The working languages of the conference will be Chinese and English.
会议工作语言为中文和英文。
youdao
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The working languages of the conference will be Chinese and English.
会议工作语言为中文和英文。
youdao