英语解释:The town walls were built as a defense against enemy attacks.
城墙是为防御敌人袭击而修建的。
~ (against sth) something that provides protection against attack from enemies, the weather, illness, etc.
• 防御物;防务;防御能力:
英语解释:The town walls were built as a defense against enemy attacks.
城墙是为防御敌人袭击而修建的。
~ (against sth) something that provides protection against attack from enemies, the weather, illness, etc.
• 防御物;防务;防御能力:
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