canonical model

例句：

1. 1.The canonical form of the sentence is written in uppercase letters.
   句子的标准形式是用大写字母书写。
2. 2. The canonical example of a scientific paper is a well-structured and well-referenced document.
   科学论文的典型例子是结构良好、引用充分的文档。
3. 3. The canonical approach to this problem involves using statistical methods.
   解决这个问题的典型方法是使用统计方法。