Last Updated：2025/12/03
Sentence
一過性天体現象はしばしば数日で現れて消え、天文学者が迅速に観測することを難しくします。
Quizzes for review
Astronomical transients often appear and fade within days, challenging astronomers to observe them promptly.
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Astronomical transients often appear and fade within days, challenging astronomers to observe them promptly.
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Related words
astronomical transients
Noun
form-of
plural
Japanese Meaning
天体一過性現象（天文学において、一時的、または短時間で現れて消える天体イベントを指す。なお、この単語は「astronomical transient」の複数形です）
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