形容词
中文翻译：有效的
同义词：
['efficient', 'productive', 'efficient', 'fruitful']
例句：
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1. The new policy is expected to be effective in reducing pollution.
预计新政策能有效减少污染。
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2. Her suggestions are very effective at solving problems.
她的建议在解决问题上非常有效。
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3. The manager's leadership style was highly effective in boosting the team morale.
经理的领导风格在提升团队士气方面非常有效。