Curly braces denote an associative array (that is, an object), with its key-value pairs separated by commas.
大括号表示联合数组(即对象),它的键-值组合由逗号分隔。
A dictionary is like an associative array or hash: It USES key-value pairs to store and retrieve information.
字典类似于关联数组或散列;它使用键值对来存储和限制信息。
It's sometimes known as an associative array because data is associated with a key value, or as a hash table.
它有时候称为关联数组(因为数据与一个键值相关联),或者作为散列表。
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