名词
中文翻译：Unknown
同义词：
['closed', 'sealed', 'locked']
例句：
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1. The closed tester is used to check the integrity of the circuits.
关闭测试器用于检查电路的完整性。
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2. The seal was broken, and the box was left open.
密封被打破了，箱子被打开。
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3. The lock was picked, and the door was opened.
锁被撬开了，门被打开了。