形容词
中文翻译：有效的
同义词：
['efficient', 'efficient', 'productive', 'fruitful', 'beneficial', 'advantageous', 'advantageous', 'advantageous']
例句：
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1. This medicine is very effective in treating headaches.
这种药对治疗头痛非常有效。
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2. 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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3. The manager's suggestion was very effective in solving the problem.
经理的建议在解决问题上非常有效。