形容词
中文翻译：有效的
同义词：
['efficacious', 'efficient', 'productive']
例句：
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1.The new policy is expected to be effectivein reducing pollution.
预计新政策能有效减少污染。
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2. The manager's suggestions were veryeffective in improving the company's performance.
经理的建议非常有效，提高了公司的业绩。
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3.The new software is expected to be effectivein enhancing our productivity.
预计新软件能提高我们的工作效率。