点（.） 代表任何单个字符。

The period (.) represents any single character.

youdao

根据日期和号码，很容易找到任何单个文档。

Based on the date and the number, you can easily find any single document.

youdao

任何单个企业只能实现SOAP通信通道的一端。

Any single enterprise will implement only one end of the SOAP communication channel.

youdao

And then hash character takes in any string or character, single character, gives me back a number. Notice what I do.

然后哈希接受任何字符串或字母，单个字符,返回给我一个数字，注意我要做什么。

麻省理工公开课 - 计算机科学及编程导论课程节选