Bulleted and numbered lists
LaTeX Lesson 4 1:58 English narration · English + 中文 subtitles burned in
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Transcript
A list is your first ENVIRONMENT, which is the second shape in LaTeX after the command.
列表是你遇到的第一个"环境"， 而环境是 LaTeX 里继命令之后的第二种形状。
It opens with begin and a name, holds your content, and closes with end and the same name.
它以 \begin 加一个名字开始，中间装着你的内容， 以 \end 加同一个名字结束。
Inside, every entry starts with item, and the bullets and spacing are handled for you.
在里面，每一条以 \item 开头，而符号和间距都由它替你处理。
Remember this shape: tables, maths and drawings all use this shape too.
记住这个形状：表格、数学公式和绘图，用的也都是这个形状。
Want numbers instead of bullets?
想要编号而不是圆点？
Change one word.
改一个词。
Itemize becomes enumerate, at the begin and the end, and everything else stays exactly as it was.
把 itemize 换成 enumerate，begin 和 end 两处都换， 其余的一切原封不动。
Look at the item lines — they never changed.
看那些 \item 行——它们一点都没变。
That is why you can reorder a numbered list, or insert an entry in the middle, and the numbers follow without you touching them.
这就是为什么你可以给一个编号列表重新排序、或者在中间插一条， 而编号会自己跟上，你一个数字都不用碰。
Put a whole list inside an item and you get sub-points.
把一整个列表放进某一条 \item 里面，你就得到了子项。
LaTeX indents the inner one and gives it a different bullet shape, so the levels read differently without you choosing anything.
LaTeX 会把内层缩进，并给它一个不同的符号形状， 于是不同层级读起来就不一样，而你什么都没有选。
You supply the structure, not the spacing — which is the same bargain as sections in lesson two.
你提供的是结构，不是间距—— 这和第 2 课里的"节"是同一笔交易。
One error you will definitely meet: opening with one environment and closing with another.
有一个错误你一定会遇到：用一个环境开头，却用另一个环境收尾。
LaTeX says so plainly — begin itemize ended by end enumerate.
LaTeX 会说得很直白—— "\begin{itemize} 被 \end{enumerate} 结束了"。
And a habit for every error from here on: read the FIRST error and nothing below it, because the ones after are usually knock-on effects of that one.
而从现在起，对每一个报错都养成一个习惯： 只读第一个错误，别管它下面的， 因为后面那些通常都是这一个引起的连锁反应。
Four things to take with you.
带走四点。
One: an environment is begin, a name, content, end.
第一：一个环境是 begin、一个名字、内容、end。
Two: itemize gives bullets and enumerate gives numbers.
第二：itemize 给圆点，enumerate 给编号。
Three: every entry starts with item.
第三：每一条都以 \item 开头。
Four: a list inside an item becomes indented sub-points.
第四：放在一条 \item 里面的列表，会变成缩进的子项。
Now build the list and press Run.
现在把那个列表搭出来，然后按 Run。