形容词
中文翻译：有效的
同义词：
['practical', 'efficient', 'productive']
例句：
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1. The newpolicy is expected to be effective in reducingpollution.
新政策预计将有效减少污染。
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2. Themanager's suggestion was very effective insolving the problem.
经理的建议非常有效地解决了这个问题。
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3. The new software is expected to beeffective in improving efficiency.
预计新的软件将提高效率。