名词
中文翻译：Unknown
同义词：
['transition', 'transitional', 'overhaul例句：1. The company is undergoing a major change-over in its operations.（该公司正在进行重大的运营变更。）']
例句：
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3.
在军事或航空中
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1. The company is undergoing a major change-over in its operations.
该公司正在进行重大的运营变更。
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2. After the change-over, the new system will be fully operational.
更换后，新系统将全面运行。
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3. During the change-over, all systems were shut down for safety reasons.
在更换期间，出于安全原因，所有系统都关闭了。