微软是一个软件巨头。

Microsoft is a software ___giant.

在不到15年的时间里，比尔·盖茨白手起家，将自己的公司打造成了计算机巨头。

In less than 15 years, Bill Gates has built up his own company from scratch and turned it into a computer ___giant.

亚马逊是一个电子商务巨头。

Amazon is an e-commerce ___giant.