形容词
中文翻译：Unknown
同义词：
['valid', 'efficient', 'productive', 'effective']
例句：
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1.The new policy is expected to be effective in reducing pollution.
新政策预计将有效减少污染。
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2.The software is effective at solving complex problems.
这款软件在解决复杂问题方面非常有效。
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3.The manager's leadership style is highly effective in improving team morale.
经理的领导风格在提高团队士气方面非常有效。