bansa mangwongyeong
reflecting telescope
télescope à miroir
천문학자들은 반사 망원경을 사용하여 별을 관찰합니다.
cheonmunhakjadeul-eun bansamangwa-gyeong-eul sayonghayeo byeol-eul gwanchalhamnida.
Astronomers use reflecting telescopes to observe stars.
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