请问这句如何用英语说

These are the samples. You can take them as references.
(也可以用may, 感觉更正式些. can感觉更口语化些)

These are samples, you can refer to
其实以后你不用提问这样会很麻烦的哦，O(∩_∩)O~
我给你一个专门翻译的一个地址，不仅可以翻译英语，其他语言都可以转换翻译的哦http://www.hao123.com/ss/fy.htm

These are the samples.You may take them for reference materials.

These are the samples, you can make reference to once.