动词
中文翻译：参军
同义词：
['join', 'enlist', 'serve']
例句：
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1. He decided to join the army after graduation.
毕业后，他决定参军。
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2. She was enlisted in the army at the age of 18.
她18岁那年被征召入伍。
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3. The soldier served in the war for three years before returning home.
这位士兵在战争中服役了三年后返回家园。