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The interplay between quantum mechanics and general relativity is one of the most profound puzzles in modern physics, and solving it may require a complete rethinking of our understanding of the universe.
Protecting marine life is protecting our own future.
过度捕捞的真正代价是用空荡荡的渔网和破碎的社区来衡量的。
过去从未真正消失;它在我们今天所做的选择中继续存在。