形容词
中文翻译：有效的
同义词：
['efficacious', 'efficient', 'productive']
例句：
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1. Thenew policy is expected to be effective in reducing emissions.
新政策预计将有效减少排放。
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2.The medicine is effective against the common cold.
这种药对普通感冒有效。
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3. The new software is effective at organizing large amounts of data.
这款软件能有效组织大量数据。