例句與造句

1. This article has a deep research of stock rating ' s concept , feature , necessity and practical ; using model statistics method establish the model of stock rating ; comparing of macroscopic environment between of china and america , putting forward recommendations of policy . the purpose of this article ' s research is try to make up with the defect of our country ' s research of stock rating , and try to solve the difficult of rating model design and improve stock rating ' s macroscopic environment
   本文對股票評級的概念、特點(diǎn)、必要性、現(xiàn)實意義等問題進(jìn)行了深入的探討和研究；使用現(xiàn)代數(shù)理統(tǒng)計方法建立了股票評級模型，對中外股票評級的宏觀環(huán)境進(jìn)行了比較研究并提出相應(yīng)政策建議；本文的研究試圖彌補(bǔ)我國股票評級研究中理論研究的不足和解決我國股票評級過程中亟待解決的兩個重大問題? ?評級模型的設(shè)計和股票評級宏觀環(huán)境的改善。
2. It's difficult to find modeling statistics in a sentence. 用modeling statistics造句挺難的