Now we can create our bean as a subclass of this.

现在，我们可以以这个类为父类创建子类bean。

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Prepared statements are a subclass of the statement class.

预置语句是statement类的一个子类。

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The tree class represents a tree and is a subclass of Basetree.

树以tree类表示，这个类是Basetree的子类。

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Steve Camarota, of the Center for Immigration Studies, says that kind of system threatens to enshrine a subclass of foreign workers.

NPR: Immigration Plan Puts Price on Visa

Adding to the allure of the visa, the government has created a new subclass of permanent visa to go along with the program, "888, " a number many Chinese associate with wealth.

WSJ: Australia Offers Visa for Millionaires

Adding to the allure of the investor visa, the government has created a new subclass of permanent visa to go along with the program, "888, " a number many Chinese associate with wealth.

WSJ: Australia Offers Visa for Millionaires