Millie Bobby Brown, 14, is a British actress. She is known for her role on the TV series Stranger Things. On Nov 20, she became the Goodwill Ambassador (亲善大使) for the United Nations International Children’s Emergency Fund (UNICEF). She is the youngest person to take this role. With her millions of fans, Brown hopes to teach more people about the poverty (贫穷) and violence (暴力) that affect (影响) many of the world’s children.