expertise

柯林斯詞典

1. N-UNCOUNT Expertise is special skill or knowledge that is acquired by training, study, or practice. 專業(yè)技能; 專業(yè)知識
She was not an accountant and didn't have the expertise to verify all of the financial details. 她不是會計，不具有核查所有這些財政細目的專業(yè)知識。

I've been in this job for 30 years , and I've picked up a good deal of expertise along the way.
Software is not really my area of expertise.
You place too much reliance on her ideas and expertise.
He is known for his expertise in the history of British economics .
The database is simple to use and requires no expertise at all.