名词
中文翻译：次要的前线
同义词：
['subordinate front', 'secondary front line']
例句：
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1.The military is currently conducting a secondary front operation in the desert.
军队目前正在沙漠中执行一次次要的前沿行动。
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2.The researchers found that the secondary front of the hurricane was moving towards the coast.
研究人员发现飓风的次级前沿正在向海岸移动。
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3.The city has been facing challenges due to the secondary front of the pandemic.
由于疫情的次级前沿，该城市一直面临挑战。