名词
中文翻译：外交官
同义词：
['statesman', 'diplomat']
例句：
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1. The ambassador is responsible for liaising with foreign governments.
大使负责与外国政府联络。
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2. He has been serving as an ambassador for several years.
他已经担任了几年的大使。
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3. The diplomatic relations between the two countries have improved significantly.
两国之间的外交关系已经显著改善。