In this case, there's a single variable, named people, and the value is the array containing three items, each of which is a person record with a first name, a last name, and an e-mail address.
在这个示例中，只有一个名为 people的变量，值是包含三个条目的数组，每个条目是一个人的记录，其中包含名、姓和电子邮件地址。
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