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The rise of China and the resurgence of Russia have challenged the idea that liberal democracy is the only viable form of government.

Diversity in tree species isn't just ecology—it's risk management for our planet's lungs.

"A well-written biography is a bridge between the past and the present."

Understanding the computational complexity of learning problems is essential for developing efficient algorithms.

2002年世界杯預選賽中國客場對卡塔爾，上半場中國0：1落后。