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It is the tears of the earth that keep her smiles in bloom.
它是大地的泪点,使她的微笑保持着青春不谢。
Causal inference is not just about statistical significance; it's about understanding the mechanisms behind the numbers.
Labor market institutions play a crucial role in shaping economic outcomes.
"Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world."