专业知识（名词，非正式）

(noun, INFORMAL) The knowledge required to do something competently.

EXAMPLE: Our young employees have too little experience to do their jobs well, and I think we need to hire someone with a little more know-how.

我们年轻的员工经验太少，不足以把工作做好。我认为我们必须雇用专业知识多一点的人。

to fight one's way to the top

奋斗到最高层

To compete with rivals in order to become the chief of something, such as a large company.

EXAMPLE: Although she faced many problems as a woman in a difficult industry, my hard-working sister was able to fight her way to the top of her field.

尽管作为一位女性在一个困难的行业中面临诸多难题，我的勤奋的妹妹能够奋斗到她的行业的巅峰。