Each company is fighting to protect its own commercial interests.

　　每家公司都在奮力保護自己的商業利益。

　　She gradually fought her way to the top of the company.

　　她努力奮斗，逐漸登上公司的高位。

　　Come on, you two, fight fair!

　　得了，你們倆，要按規則比賽！

　　Police tried to separate the two men who were fighting.

　　警察力圖把兩個打架的人分開。

　　She'll fight like a tiger to protect her children.

　　她為了保護孩子，可以兇得像只老虎。