形容词
中文翻译：Unknown
同义词：
['effective', 'in effect', 'operational', 'functioning']
例句：
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1.The new policy is in force now.
新政策现在已经开始实施了。
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2. The agreement is in force until the end of the year.
协议将在年底前生效。
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3. The law is in force throughout the country.
这项法律在全国范围内有效。