10年或者他们年满14岁后居住满5年。{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/c\/cb\/Become-a-US-Citizen-Step-11.jpg\/v4-460px-Become-a-US-Citizen-Step-11.jpg","bigUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/c\/cb\/Become-a-US-Citizen-Step-11.jpg\/v4-760px-Become-a-US-Citizen-Step-11.jpg","smallWidth":460,"smallHeight":345,"bigWidth":760,"bigHeight":570}3子女是收养的。