名词
中文翻译：Unknown
同义词：
['guardian', 'protector', 'watchman']
例句：
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1. The underkeeper of the castlewas responsible for guarding the gates.
城堡的看守负责守卫大门。
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2. The underkeeper made sure that all the prisoners wereproperly secured.
看守确保所有囚犯都得到了妥善的看管。
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3. The underkeeper hadto keep an eye on the guards atthe border.
看守必须监视边境的守卫。