It should be easy to scan the letter, and have a logical pro GREssion.
它应该看上去很容易浏览，有一个合理的主次关系。
A cusp is also called a stationary point or point of retrogression gression.
尖点也叫做平稳点或逆行点。
The research on support vector regression has an important theoretical and applicable significance on function regression(re-gression approximation).
支持向量回归问题的研究，对函数拟合（回归逼近）具有重要的理论和应用意义。
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