作为一个小孩子，我曾认为世界上只有黄皮肤的人，但后来我知道在世界的另一端也有白皮肤和黑皮肤的人。

As a small child, I get used to think there is only yellow skin people in the world, but I realize there are also white skin and black skin people in another side of the world later. Once I saw a black person. At first, I felt scared, but he was very nice and helped me solve my problem. Then I know we can't deny a person by his skin color. 
作为一个小孩子，我曾认为世界上只有黄皮肤的人，但后来我知道在世界的另一端也有白皮肤和黑皮肤的人。有一次我看到一个黑人，一开始，我有点害怕，但他很友好，帮助我解决了我的问题。我学到了我们不能通过一个人的肤色而否定他。