Last Updated：2025/12/03
Sentence
天文学者たちは先月、いくつかの恒星の新星を観測し、それらは劇的に明るくなった後に暗くなった。
Quizzes for review
Astronomers tracked several stellar novae last month that brightened dramatically before fading.
See correct answer
Astronomers tracked several stellar novae last month that brightened dramatically before fading.
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