Reflection
Reflex
noun, verbal noun
You shoot yourself at a mirror, and it is the anti-you. It is your reflection.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
雪野原は、巨大な鏡のように、冬の太陽の光をキラキラと反射します。
The field of snow brightly reflects the winter sunlight like a giant mirror.
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