名词
中文翻译：下士军官
同义词：
['Second Lieutenant', 'Ensign', 'Petty Officer']
例句：
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1.He is a Petty Officer Second Class in the Navy.
他在海军中是一名下士军官。
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2. She was promoted to Petty Officer Second Class.
她被提升为下士军官。
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3.The Petty Officer Second Class is responsible for maintaining order on the ship.
下士军官负责维护船上的秩序。