[] expert knowledge or skill in a particular subject, activity or job 专门知识；专门技能；专长◆We have the expertise to help you run your business. 我们拥有专门知识可以帮助你经营业务。◆the group's expertise in developing new products 这个集团在开发新产品方面的专长⨁great / little expertise 重大的／微不足道的专长⨁business / financial / management / technical expertise 商业／财务／管理／技术专长⨁to gain / have / lack expertise 取得／拥有／缺乏专长