牛顿证实了重力定律。
因为存在着一种定律，比如重力定律，宇宙可以也将能够自己产生。
Because there is a law such as gravity, the Universe can and will create itself from nothing.
我们搜集了30个有悖重力定律的广告，违背的程度各有不同……享用吧！
We've collected 30 examples of adverts that defy the law of gravity to varying degrees... enjoy!
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