今日挑戰句子
影片不是英文？
A black hole is a region in space where the force of gravity is so strong not even light, the fastest known entity in our universe, can escape.
黑洞是一個外太空的地帶，引力大到就連我們認知最快的光速也沒有辦法逃脫。
學習重點
1. universe宇宙
universe
[ˋjunə͵vɝs](n.)宇宙
每日口說挑戰科學知識！帶你了解黑洞是什麼！(Black Holes 101 | National Geographic)
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