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黄芩(唾手可得)没有造假,阿魏(稀有昂贵)容易造假。
Sustainability must be at the core of every decision we make in the mining sector.
Behavior is determined by the current stimulus situation and past reinforcement history.
凡事不能只看表面现象。钓鱼人虽然躬着身子,并不是因为对鱼恭敬;捕捉老鼠的人,把虫子留给老鼠吃,并不是因为喜爱老鼠。
你知道的越多,能想象的越多。你想象的越多,能知道的越多。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.