名词中文翻译
中文翻译：变量
同义词：
['variation', 'variable factor']
例句：
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1.The temperature can vary greatly from day to day.
温度每天可以有很大的变化。
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2. The amount of sunlight that reaches the earth's surface varies with the time of year.
到达地球表面的阳光量随着一年中的时间而变化。
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3.The pH level of a solution can be varied by adding different chemicals.
通过添加不同的化学物质，溶液的pH值可以改变。