Imagine our galaxy as a red grape in the orange jelly of the universe. When we say the universe is expanding at an increasing rate - it means that the orange jelly is getting bigger today than it did yesterday.
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释义
设想一下我们的星系就像一粒红色的葡萄处在橙色的果冻(宇宙)中。当我们说宇宙以递增的速度扩张之时--那意味着今天橙色的果冻比昨天变大了。
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