小孩的英语版怎么说

小孩 (xiǎohái) is the Chinese word for "child." If you are looking for the Engpsh equivalent, you can simply say "child." Here are a few sentences using the word "child" in different contexts:

The couple has three children.
She is a kind and caring child.
Children should always be supervised when playing near water.

It's worth noting that "child" can refer to a young person of any gender, while "boy" and "girl" specifically refer to males and females, respectively.