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Lesson 1: Say who you are
You will learn to introduce yourself and say who someone is.
A1 · 21 steps · about 20 min
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Next: Emerald Round · Recognize Japanese Meanings · 10 words
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光年
noun
light year
B2
- 1年に真空中を光が走る距離
- 5.88兆マイルまたは9.46兆キロメートル。
light year
こうねん
B2Upper-Intermediate
That star is about four light-years from Earth.