名词
中文翻译：Unknown
同义词：
['protection costs', 'defense expenses', 'defense expenditures']
例句：
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1. Thegovernment has to pay a lot of money for its defence costs.
政府为了国防支出不得不支付大量的金钱。
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2. The company's defense costs have increased significantly in recent years.
该公司近年来的防卫开支显著增加。
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3.The cost of building a new military base is a major factor in the country's defence costs.
建造新军事基地的成本是该国国防开支的一个主要因素。