名词
中文翻译：警卫
同义词：
['guard', 'protector', 'sentinel']
例句：
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1.The guards were posted at the entrance of the castle.
守卫们站在城堡入口处。
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2. He is a loyal guard who always keeps watch over his master's interests.
他是一个忠诚的守卫，总是守护着他主人的利益。
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3. The sentinels stood vigil at the gate, ready to challenge any intruders.
哨兵们站在门口警戒，随时准备挑战任何闯入者。