Because we cannot copy an array, we cannot write a function that takes an array type parameter.
因为数组不能复制,所以无法编写使用数组类型形参的函数。
We cannot write the values directly into the fields; instead, we make these fields computed, and we link their value to the original corresponding fields.
我们无法把值直接写入字段;相反,可以计算这些字段,并把它们的值链接到初始的对应字段。
We cannot sign a bill or write a letter or buy a house without our pen.
没有了笔,我们就不能签署账单、写信或买房子。
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