Let's say you are trying to learn some new and rather difficult English vocabulary using a stack of cards.

让我们假设你正试图用一堆卡片来学习一些新的、相当难的英语单词。

youdao

The indentation levels of consecutive lines are used to generate indent and DEDENT tokens, using a stack, as follows.

连续行的缩进层次用于生成语言符号INDENT和DEDENT，这个过程中使用了堆栈，如下述。

youdao

This problem is simple. After understanding the problem, we should quickly realize that this problem can be solved by using a stack.

这是一个简单的问题，在理解这个问题之后，我们应该很快意识到这个问题能用栈来解决。

youdao

He suggests an idea of "virtual towing" where an idle car could pick up on another vehicle and follow it back to a stack, using inter-car tracking software.

CNN: Reinventing the wheel

There's also been talk of Apple using a thinner, better panel that would likely use in-cell touch rather than stack the LCD and touch surfaces in separate layers.

ENGADGET: iPhone 5: the rumor roundup Mobile

From here you can take shots using the phone as a trigger (which is how I'm mainly using it) to avoid those self-portrait reflections, but there's a stack of other options that many will find useful.

ENGADGET: IRL: Wacom Bamboo Splash, Triggertrap Mobile and the iPad 3