1、business；

例句：他最终构筑起了一个延伸至泰国和新加坡的商业帝国。

He eventually constructed a business empire which ran to Thailand and Singapore .

2、commerce；

例句：自从冬季来临后，市区的商业一直在顺利开展着。

Commerce in the urban districts has been carried on smoothly since winter set in.

3、trade；

例句：从伦理上和法律上有三种方法来保护知识产权，版权、专利、商业秘密。

There are three ways to ethically and legally protect intellectual property:，copyrights, patents, and trade secrets.

4、biz；

例句：通过提供现代的操作系统和商业应用软件，海因斯先生既可以满足用户需求，也能让用户更愿意留下来。

Mr. Heins can give them what they want with a modern OS and the biz apps that will make it easy to stay with BlackBerry.