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Psychology must study the adaptive functions of thought and behavior.
煤炭使美国在世界范围内保持竞争力。
 True courage is facing one's own weaknesses and striving to change.
"The novel is a form of exploration, a way of asking questions that don't have answers."
The joy of baking comes from sharing—whether it's knowledge or the final product.
所谓的天才是不断地承受痛楚。