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Mathematics is the science of patterns, and we study them to understand how things work.
Every mathematical theorem is a story waiting to be told, a mystery waiting to be unraveled.
穷人并不懒惰;他们只是被困在一个让他们很难摆脱贫困的系统中。
Sustainable forestry isn't just about cutting trees, it's about growing civilizations.
"The human voice is the most dangerous instrument."