{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/0\/05\/Annotate-a-Book-Step-9.jpg\/v4-459px-Annotate-a-Book-Step-9.jpg","bigUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/0\/05\/Annotate-a-Book-Step-9.jpg\/v4-759px-Annotate-a-Book-Step-9.jpg","smallWidth":460,"smallHeight":306,"bigWidth":760,"bigHeight":506.31868131868134}5写章节总结(可选)。