有閒日語
Articles
Vocabulary
Kanji
Practice
Pricing
Articles
Vocabulary
Kanji
Practice
Pricing
Vocabulary
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N1
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光速
光速
こうそく
kousoku
speed of light
N1
Noun
Pitch accent
⓪ 平板
Kanji in this Word
光
ray, light
N3
速
quick, fast
N3