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Innovation in mining technology is essential to meet the world's energy demands.
Complexity is not just about the number of components in a system, but about the nature of their interactions.
社交场中的闲逸令人厌恶的,因为它是被迫的;孤独生活中的闲逸是愉快的,因为它是自由的、出于自愿的。
"The only way to make sense out of change is to plunge into it, move with it, and join the dance."