盐有许多用途。
元编程在大型计算机编程中有许多用途。
Metaprogramming has many uses in large-scale computer programming.
可以将图像按钮用于许多用途，但是这要求您开发图像。
You can use image buttons for many purposes, although they do require you to develop images. If you want to bypass this, create an image button with Alt text and an invalid URL for its image.
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