名词
中文翻译：反作用
同义词：
['counter-effect', 'side-effect']
例句：
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1. The medicine has a counter-effect on the patient's condition.
这药对病人的状况有反作用。
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2. The experiment showed that the chemicals had a side-effect on the environment.
实验表明这些化学物质对环境有副作用。
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3. The new policy has a counter-effect on the economy.
新政策对经济有反作用。