feed\"entry"行是一个类XPath表达式。
我们可以在这编写一个表达式来匹配许多类的方法的集合。
We could write an expression here that matched a set of methods, on many classes.
每个表达式类都有一个evaluate方法和一个enumerate方法。
Each expression class has an evaluate method, and an enumerate method.
在这个特别的规则表达式中，出现了' [[：space：]] '字符类。
In this particular regular expression, we encounter the '[[: space:]]' character class.
每个表达式类都有一个simplify方法，以允许表达式重写。
Each expression class has a simplify method, to allow expression rewriting.
他们能不能表达自己是属于哪一类人？
Can they express the kind of person they believe themselves to be?
第一类人通常用一种非常消极的方式，并且很少直接表达愤怒。
First, there are people who use a passive style and rarely express anger directly.
一类重要的表达式是定位路径。
第一步是聚类基因表达数据。
它是一种文明，而舞悼嗲对那类文明的表达。
It's a culture and the dance is an expression of that culture.
已知差异表达基因功能聚类：共8类。
Function of differentia expression gene known: There are 8 kinds.
常用于基因表达数据分析的聚类方法有很多。
There are lots of cluster methods applied to the analysis of gene expression data.
学习㈠些常见的娱乐，体育类单词，表达自己的爱好。
这是其他从不实例化的代码表达式对象的基类。
This is a base class for other code expression objects that is never instantiated.
讨论了子空间上一类矩阵反问题，得到了问题有解的充分必要条件及解的表达式。
In this paper, a class of inverse problem for matrices on subspace is studied.
讨论了子空间上一类矩阵反问题，得到了问题有解的充分必要条件及解的表达式。
In this paper, a class of inverse problem for matrices on subspace is studied.
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