四乘幂

例句：

1. 1. The square of a number is its four-sided shape.
   一个数的平方是它的四边形形状。
2. 2. The power of a variable is the fourth power of its value.
   变量的幂是其值的四次方。
3. 3. The square root of a number is its four-sided shape.
   一个数的平方根是它的四边形形状。