形容词
中文翻译：无效果的
同义词：
['ineffective', 'inefficient', 'useless']
例句：
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1.The new policy has had no effect on the company's performance.
新政策对公司的业绩没有影响。
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2. The machine was designed to be ineffective at cleaning small particles.
这台机器被设计成对小颗粒物清洗无效。
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3. The manager suggested that the new system would be ineffective in achieving its goals.
经理建议新系统在实现其目标方面是无效的。