形容词
中文翻译：有效的
同义词：
['practical', 'efficient', 'productive']
例句：
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1. The new policy is expected to be effective in reducing pollution.
新政策预计将有效减少污染。
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2. The manager's decision was effective in solving the problem.
经理的决定有效地解决了这个问题。
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3. The new software is effective at organizing data.
这款软件在整理数据方面非常有效。