curly brace

基本解释

One of the key features of Sass is its indentation-based syntax, which gives you curly-brace and semi-column free code.
Sass的一个关键特性是缩进式的语法，这种语法可以产生柱式外观的代码。
There should be one space between the ) (right parenthesis) and the { (left curly brace) that begins the statement body.
(右括号)与开始程序体的{(左大括号)之间应插入一个空格。
You'll want to remember to use the more explicit curly-brace form when your environment variable is not isolated from the surrounding text by whitespace (spaces or tabs).
请记住：当环境变量没有用空白（空格或制表键）与周围文本分开时，请使用更明确的花括号形式。

So the open curly brace followed by the closed curly brace means everything inside of these curly braces should get executed, but only if that first condition is actually true.
所以左花括号后面跟着,右花括号，这意味着花括号里面所有的代码,都应该是要被执行的，但只有当第一个条件是正确的。
哈佛公开课 - 计算机科学课程节选
So when you define a function, you have, as we've seen these curly braces, that define all ; of the code that's associated with that function; open curly brace code, close curly brace, that is the function.
当你定义一个函数，就像我们看到的这些花括号，定义了与,那个函数相关的所有代码;,左花括号，代码，右花括号，这就是一个函数。
哈佛公开课 - 计算机科学课程节选
They are correct, as the picture suggests, but then I hit that curly brace.
它们是正确的，就像那个图所表示的，然后以那个花括号结束。
哈佛公开课 - 计算机科学课程节选