Results, 光年は光が一年間に進む距離です。それは9兆5千億kmです。

光年kounenhahikariga年間nenkanni進むsusumu距離kyoriですdesuそれsoreha9兆5千億kmkmですdesu
A light-year is the distance light travels in one year. It's 9.5 trillion (9,500,000,000,000) kilometers.

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