动词短语
中文翻译：信号检查
同义词：
['check signal', 'verify signal']
例句：
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1.Before leaving the office, we always perform a signal check to ensure everything is secure.
离开办公室前，我们总是进行信号检查，确保一切安全。
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2. The engineer performed a signal check before starting the new project.
工程师在开始新项目之前进行了信号检查。
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3.During the flight, the pilot conducted a signal check to ensure all systems were functioning properly.
飞行期间，飞行员进行了信号检查，以确保所有系统都正常工作。