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The real challenge is not just to collect data, but to make sense of it.
The forest doesn't need us, but we need the forest—this truth should guide every decision we make in forestry.
The past is always there, and it's always different every time you look at it.
“物质”不是唯一的事实标准:还存在心理事实,而且无法以任何的物质方式来解释、证明、或辩驳它。