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采石业的创新不仅关乎新机械,更在于重新构想我们与开采土地的关系。
数学中的每个问题都是一个等待解决的谜题,而乐趣就在于解决的过程。
I think it should be called a lie because a pig is not like a day and people do not have skeletons in their cupboards.
The study of mathematics is a constant dialogue between the concrete and the abstract.
Freedom is the treasure of individuals.