knowledge 
英 [ˈnɒlɪdʒ]  美 [ˈnɑlɪdʒ] 
n. 知识；知晓；消息；理解范围

例句：
They lack sufficient knowledge of other industries. 

他们对其他产业的了解不够。

He has a detailed knowledge of international law. 

他对国际法有详细的了解。

I have a working knowledge of French. 

我掌握了足以应付工作的法语知识。

Clarke considered how he would use his knowledge about Macy. 

克拉克琢磨怎样才能利用他对梅西的了解。

His confidence comes from his knowledge that he can always pull out. 

他的自信来源于他知道自己总能渡过难关。