动词短语
中文翻译：保持有效
同义词：
['remain valid', 'remain effective']
例句：
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1. The agreement between the two countries remains in force until next year's summit.
两国之间的协议将持续有效直到明年的峰会。
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2. The company's leadership has remained in force since its founding.
该公司的领导层自成立之初就一直保持有效。
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3. The law still remains in force despite the government's attempts to repeal it.
尽管政府试图废除该法律，但该法律仍然有效。