雪儿 is the Chinese name for the character Snow White. In English, we would simply say "Snow White". The name comes from the fairy tale "Snow White and the Seven Dwarfs", which is a well-known story from the Brothers Grimm. Here are some example sentences:

Snow White was the fairest of them all. (雪儿是七个小矮人中最漂亮的。)

The wicked queen asked Snow White to come and live with her. (那个恶女王请雪儿来和她一起住。)

Snow White found a home with the seven dwarfs in the forest. (雪儿在森林里找到了和七个小矮人一起生活的家。)