In this example, no placeholders are employed.
本例中没有使用占位符。
In the above command, X, Y, and Z are used as placeholders.
在上面的命令中，X、Y和Z作为占位符。
But for now, just think of these objects as placeholders.
但现在，只是觉得这些物体作为占位符。
The verbalization is a combination of plain text and placeholders.
表示法是文本和占位符的组合。
As the pattern develops, we create placeholders for future pattern elements.
在开发模式时，我们为将来的模式元素创建占位符。
For a more complicated pattern, you can use special characters as placeholders.
对于更复杂的模式，您可以使用特殊字符作为占位符。
You can even use visual placeholders for variables when you create formulas.
你在组合公式时，甚至可以用暂时符号来当作变数。
They're placeholders until more sophisticated counterparts to Apple's tablet are ready.
在比苹果的平板电脑更复杂的产品出现之前，他们只是占据了这个位置。
Variables serve as placeholders for data that can change during the execution of a program.
变量为数据提供占位，使得其可以在程序运行时改变。
Variables serve as placeholders for data that can change during the execution of a program.
变量为数据提供占位，使得其可以在程序运行时改变。
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