Last Updated：2025/11/23
Sentence
古い天文学の文献では、複数の近日点を指すために近日点の複数形が使われることがありましたが、その用法は現在では廃れています。
Quizzes for review
Older astronomical texts sometimes used the term perihelions to denote multiple perihelia, but the usage is now deprecated.
See correct answer
Older astronomical texts sometimes used the term perihelions to denote multiple perihelia, but the usage is now deprecated.
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