In Python, a tuple is represented by parentheses.

在Python（广泛使用的解释型、高级和通用的计算机编程语言）中，元组用圆括号表示。

In mathematics, sets are usually represented by a brace.

在数学中，集合通常用大括号表示。

In mathematics, the ordinate is usually represented by y.

在数学中，纵坐标通常用y表示。

In algebra, a quadratic function is represented by a parabola.

在代数中，二次函数用抛物线表示。

In Morse code, the letter T is represented by a single dah.

在摩尔斯电码中，字母“T”由一个dah表示。

In English, the schwa is often represented by the letter 'a'.

在英语中，中性元音通常用字母'a'表示。

The cooking culture in Italy is represented by pasta and pizza.

意大利的饮食文化以面食和披萨为代表。

In the coordinate system, the abscissa is usually represented by x.

在坐标系中，横坐标通常用x表示。

The outcome of this experiment can be represented by a random variable.

这个实验的结果可以用一个随机变量来表示。

The shwa is represented by an upside-down 'e' in phonetic transcription.

中性元音在音标中用倒置的'e'表示。