To be competent in his field, he must develop a working knowledge of this aspect.

为了使自己能胜任所从事工作，必须加深这方面知识。

youdao

To be competent in management and technical work and participate in college course studying and academic training.

可以胜任管理层或专业技术工作并能参加大学课程的专业学习和学术研修。

youdao

They must have received adequate training, be competent in performing the job and in the use of the equipment involved.

他们必须接受充分的培训、有能力实施作业和使用相关设备。

youdao

According to the SCIS report, there is a lack of confidence that newly-trained staff will know their subjects well and be competent in practical classroom skills.

BBC: Teacher training comes under fire

Applicants need to meet the University of London minimum entrance requirements and be fully competent in English.

BBC: Richard Dawkins

"We are confident that the treatment will be successful as he is in professional and competent hands, " it added.

BBC: Nelson Mandela back in hospital with lung infection