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Once there was a scientist. He wanted to study how monkeys learn. 曾经有一位科学家，他想研究猴子的学习能力。 He put two peanuts into a tall glass bottle. 他把两颗花生米放进了一个高高的玻璃瓶里。 The bottle was completely transparent, one could see the two peanuts clearly from outside. 玻璃瓶是完全透明的，从外面可以很清楚地看到两颗花生。 | 
