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盐是我们每天要吃的东西,可真正要说盐却让人犯难。道理想必大家也知道,知识里面,恰恰是那些熟视无睹的基本概念最说不清楚,比如说为什么(-1)×(-1)=1?这不就是大家读初中就熟知的知识么?可是准确的回答却已经超过高中的数学知识了。
Salt is something that we eat every day, but it can be really difficult to say salt. The ideals of Dao must also know that the most basic concepts in knowledge are those that turn a blind eye. For example, why is (-1) × (-1) = 1? This is not the knowledge that everyone is familiar with when they read junior high school? The answer has already exceeded the mathematical knowledge of high school.