根据英语词典的释义：

brace的定义是：either of the two marks, { }, used to show that the words, etc. between them are connected，表示的是“大括弧、大括号；

bracket有两种含义：

1. 括号either of a pair of marks, ( ), placed around extra information in a piece of writing or part of a problem in mathematics

2. 方括号either of a pair of marks, [ ], placed at the beginning and end of extra information in a text, especially comments made by an editor

我们常见的括号英文如下：

1. () (round brackets or parentheses)：圆括号/小括号

2. [] (square brackets)：方括号/中括号

3. <> (angle brackets)：尖括号

4. {} (braces) ：大括号

例如：

Braces are used to indicate aggregation OR to clarify the grouping of quantities when parentheses and square brackets have already been used.

当圆括号和方括号已经用过时，一对大括号用于表示加总或标出一个数量组。