形容词
中文翻译：有效的
同义词：
['efficient', 'effective', 'efficient']
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. This software is very effective at organizing your files.
这款软件在整理文件方面非常有效。
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3. The manager's suggestions were very effective in solving the problem.
经理的建议非常有效地解决了这个问题。