名词
中文翻译：阈限
同义词：
['limit', 'threshold']
例句：
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1. The experiment was conducted at a certain level of light intensity, which is the threshold for perception.
实验是在一定的光强度水平下进行的，这是感知的阈值。
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2. The temperature has reached its threshold for freezing, and it will start to freeze soon.
温度已经达到了结冰的阈值，很快就会开始结冰。
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3. The researcher found that the threshold for detecting the chemical reaction had been loweredby 5%.
研究人员发现检测化学反应的阈值降低了5%。