名词
中文翻译：要塞工事
同义词：
['fortification', 'fortress', 'siege works例句：1. The ancient city was heavily fortified during the siege.（在围攻期间，这个古老的城市被严重加固了。）2. The engineers were tasked with designing and constructing the new siege works.（工程师们被指派负责设计和建造新的围攻工程。）']
例句：
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1. The ancient city was heavily fortified during the siege.
在围攻期间，这个古老的城市被严重加固了。
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2. The engineers were tasked with designing and constructing the new siege works.
工程师们被指派负责设计和建造新的围攻工程。
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3. The city's defenses were weakened by the enemy's successful siege.
敌人的成功围攻削弱了城市的防御。