An atom is a basic piece of data, such as a number, string, or character.
原子是一个基本的数据，比如一个数字、字符串或者字符。
It first explained key concepts, such as character and byte semantics with respect to string data.
首先介绍了一些关键概念，如针对字符串数据的字符语义和字节语义。
A string data that has a partial character can be called an incomplete string data.
可以将拥有部分字符的字符串数据称为不完整的字符串数据。
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