在这个例子中的每个正规表达式都是测试字符串的子串之一。

Each regular expression in this example is a substring of one of the test strings.

youdao

正确的做法是显式地测试字符串是否为空，使用相应的内置函数。

The correct solution is to explicitly test strings for emptiness using the appropriate built-in function.

youdao

在现有的报表中添加或修改一个列标题和描述，报表属性文件中的测试字符串定义也需要被添加以及修改。

A column heading and description is added or changed in an existing report, its test string definition also needs to be added or changed in the report property file.

youdao

I'm doing a test there to say, x if the string x is less than the value of b, and x does not appear before b as strings, then I was going to do, oh, a couple of things, because they're at the same block level.

我正在做一个测试来看看，字符串,是不是小于b的值，而且x不在b之前作为字符串出现，如果是真的话我就要做，一系列的操作，因为他们是在同一个块等级上。

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