形容词
中文翻译：有效的
同义词：
['capable', 'efficient', 'productive', 'successful']
例句：
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1. The newpolicy is expected to be effective in improving the economy.
预计新政策将有效改善经济。
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2.The manager's suggestion was very effective in solving the problem.
经理的建议非常有效地解决了这个问题。
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3. The new software is expected to be effective in reducing costs.
预计新的软件将有效降低成本。