名词
中文翻译：保险箱
同义词：
['safety depositbox', 'safe', 'vault']
例句：
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1. He kept his valuables ina vault at the bank.
他在银行的一个保险箱里保管了他的贵重物品。
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2. Thevault was locked and the key was missing.
保险箱被锁上了，钥匙不见了。
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3. They used tokeep their money in a vaultfor safety.
他们过去常常把钱放在保险箱里以保安全。