Placeholder (占位符)

音标：[ˈpleɪsˌhoʊldər]

翻译：

占位符：指在设计、编程或排版中，用来暂时占据空间的符号、文本或图像。

代替物：在某些情境中用来表示暂时无法确定的值或内容。

读音：

英语发音：[ˈpleɪsˌhoʊldər]
其中，"place" 发音为 [pleɪs]，"holder" 发音为 [ˈhoʊldər]。

用法：

在编程中，placeholder 经常用来指示用户在表单或文本框中填写信息时需要输入的示例或提示。

在图形设计中，placeholder 可能表示一个图像或元素的预设位置，等待最终内容替换。

在数学或逻辑推理中，placeholder 用来代表未知数或变量。

例句：

The form has a placeholder text that shows the format of the phone number.

He put a placeholder image in the design because the final graphic isn't ready.

In programming, a placeholder is often used to display temporary content while waiting for the final data.

The text box includes a placeholder that tells you what to enter.

The document template has several placeholders where the specific information needs to be inserted later.

The placeholder in the menu is replaced by a real dish name when the recipe is finalized.

Placeholders in this coding framework allow you to design the layout before having the actual data.

The website uses a placeholder for images that are still being sourced.

The file had several placeholders for the dates and names that will be updated later.

Placeholder variables can be substituted with actual values when they are determined.

短语搭配：

Placeholder text：占位文本

Placeholder image：占位图像

Placeholder variable：占位变量

Temporary placeholder：临时占位符

Text placeholder：文本占位符

Form placeholder：表单占位符

小结：

Placeholder 是一个广泛应用于多个领域的术语，尤其在编程、设计、数学和逻辑中，都有重要的应用。在某些情况下，它作为一个临时元素，待最终内容或数据填充或替换。