If the line matches the regular expression, then you print out that line.
如果该行与正则表达式匹配，则打印该行。
The first line defines a lambda expression and binds it to the symbol total.
第一行代码定义了一个lambda表达式并将其和total符号绑定到一起。
Notice, in line 60, the XPath expression as argument of SUM function.
注意第60行中作为SUM函数参数的XPath表达式。
The line feed\"entry" is an XPath-like expression.
feed\"entry"行是一个类XPath表达式。
Helen: Today's new expression is' bottom line '.
大家好，我是刘佳。Helen，今天咱们要学的是什么最新表达呢？
On the next line, we are creating an expression and printing it out.
在接下来的一行，我们创建一个表达式并把它打印出来。
The second line is an expression, so the interpreter evaluates it and displays the result.
第二行是一个表达式，解释器会计算这个表达式，然后把结果输出。
Our final expression is "hold the line."
今天讲述的最后一个词汇是"hold theline."
The code examples show an example template expression, with its result on the next line.
下面的例子展示了一个模板表达式的示例，结果在第二行。
Provide the matching end for the expression on the same line as it starts.
在表达式开始的同一行上为其提供匹配的结束代码。
In warp analysis, horizontal line method is simple and can exactly expression cost difference.
偏差分析法中的横道图法简单明了，能够准确表达出费用的绝对偏差。
Construction of HBV targeted ribonuclease and its expression in 2.2.15 cell line.
HBV靶向核糖核酸酶真核表达载体的构建及其在2.2.15细胞内的表达。
If an expression extends beyond a single line, you must use the line continuation character.
如果表达式超过一行，必须使用行继续符。
A line of code ends before an expression is closed.
某行代码在表达式关闭之前结束。
A line of code ends before an expression is closed.
某行代码在表达式关闭之前结束。
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