形容词
中文翻译：有效的
同义词：
['efficient', 'productive', 'beneficial']
例句：
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1. The new policyis expected to be effective in improving the efficiency of the company.
新政策预计将有效提高公司的效率。
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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 technology is expected to be effective in reducing energy consumption.
新技术预计将有效降低能源消耗。