形容词
中文翻译：有效的
同义词：
['practical', 'efficient', 'productive']
例句：
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1. This newsoftware is very effective at improving our productivity.
这款新软件在提高我们的生产力方面非常有效。
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2. The manager's suggestion was very effective in solving the problem.
经理的建议在解决这个问题上非常有效。
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3.The new policy has been found to be highly effective in reducing crime rates.
新的政策被发现在降低犯罪率方面非常有效。