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Black holes are not just cosmic vacuums; they are the ultimate laboratories for testing the limits of our physical theories.
The Ethiopians say that their gods are snub-nosed and black, the Thracians that theirs have light blue eyes and red hair.
不了解一个国家的文学,就无法理解这个国家的历史。
You can't let praise or criticism get to you. It's a weakness to get caught up in either one.
Innovation is not just about technology; it's about changing the way people think and live.