他的考试成绩是负数。

His test score was a negative.

温度降到了负数以下。

The temperature dropped below negative.

负数的绝对值是正数。

The absolute value of a negative number is positive.

整数可以是正数、负数或零。

An integer can be positive, negative, or zero.

在银行账户中，负数表示欠款。

In a bank account, a negative indicates debt.

虚数的平方根是负数。

The square root of an imaginary number is a negative number.

这个数学题的答案是一个负数。

The answer to this math problem is a negative.

你可以用减号来表示负数。

You can use a minus sign to indicate negative numbers.

负数前面总是有一个减号。

A negative number always has a minus sign in front of it.

老师解释了乘负数的概念。

The teacher explained the concept of multiplying negative numbers.