He knows six languages, such as Chinese, Russian and Spanish.
他懂六种语言，如汉语、俄语、西班牙语。
He masters four languages, that is Chinese, English. Russian and French.
他精通四门语言，即汉语、英语、俄语和法语。
He masters four languages, that's Chinese, English, Russian and French.
他精通四门语言，即汉语、英语、俄语和法语。
He masters four languages, that's Chinese, English, Russian and French.
他精通四门语言，即汉语、英语、俄语和法语。
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