在BZ 代数中引入元素周期的概念，并讨论了零对称BZ 代数元素周期的重要性质。

The notion of periods of elements in BZ algebras is introduced, and its important properties in the frame of zero symmetric BZ algebras are discussed.

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for - each循环能够迭代数组或集合中的元素。

The for-each loop can iterate over the elements of an array or of a collection. Listing 1 shows the syntax of iterating over a collection with the for-each loop.

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此外，您可以使用该操作来迭代数组(包括基本类型数组)中的元素。

In addition, you can use this action to iterate through the elements of an array, including arrays of primitives.

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