名词
中文翻译：不变量
同义词：
['constant', 'invariable例句：1. The temperature is a constant that affects the weather.（温度是一个影响天气的常量。）2. The constant growth of the population has led to overcrowding.（人口的持续增长导致了过度拥挤。）']
例句：
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1. The temperature is a constant that affects the weather.
温度是一个影响天气的常量。
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2. The constant growth of the population has led to overcrowding.
人口的持续增长导致了过度拥挤。
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3. The constant stream of traffic makes it difficult to cross the road.
持续不断的交通流使得过马路变得困难。