单词：astronomical refraction
astronomical refraction的用法和样例：
例句
- While a prism can make a dramatic rainbow, atmospheric refraction isn't that strong.棱镜能够产生引人注目的彩虹，大气折射没有这么强烈。
- Therefore, atmospheric refraction modification must be made in order to improve the accuracy of measurement.因此，为了提高测量值的精确度，必须进行大气折射修正。
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