名词
中文翻译：防卫
同义词：
['protection', 'guard', 'fortification']
例句：
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1. The governmentis investing heavily in defense technology.
政府正在大力投资于防御技术。
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2. Thesoldiers were on full alertto defend the city against anattack.
士兵们全副武装，准备保卫城市免受攻击。
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3. The company'sdefense strategy has been widely praised byexperts.
该公司的防御策略得到了专家的广泛赞誉。