A pair of braces creates an empty dictionary: .
一对大括号创建一个空的字典：。
JSON objects are constructed in a key: value pair format. The elements of the object are separated by commas, and each object is contained within curly braces .
JSON对象是由一个“键：值”对格式构成的，对象的元素由逗号隔开，每个对象包含在一对大括号中。
JSON objects are constructed in a key: value pair format. The elements of the object are separated by commas, and each object is contained within curly braces .
JSON对象是由一个“键：值”对格式构成的，对象的元素由逗号隔开，每个对象包含在一对大括号中。
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