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The laws of physics are universal, and testing them in extreme environments like the galactic center is essential.
我不需要理由去毫无歉意地做自己。
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
The best way to cheer yourself up is to try to cheer somebody else up.
Without models, we would be wandering in the dark when it comes to predicting climate change.