我奶奶今年四十八岁了。

My grandmother is ___forty-eight years old this year.

这个班级有四十八名学生。

There are ___forty-eight students in this class.

她四十八岁时决定重返校园学习绘画。

She decided to go back to school to learn painting at ___forty-eight.

我们需要订购型号为48的零件来修理这台机器。

We need to order part number ___forty-eight to fix this machine.