Workshop: a period of discussion and practical work on a particular subject, in which a group of people share their knowledge and experience 研讨会;讲习班
a drama workshop
戏剧研讨班
a poetry workshop
诗歌讲习班
Session: a formal meeting or series of meetings of a court of law, a parliament, etc.; a period of time when such meetings are held (法庭的)开庭,开庭期;(议会等的)会议,会期
a session of the UN General Assembly
一届联合国大会
The court is now in session.
法庭现在正在开庭。
The committee met in closed session(= with nobody else present).
委员会举行了秘密会议。
Expertise: expert knowledge or skill in a particular subject, activity or job 专门知识;专门技能;专长
professional/scientific/technical expertise
专业/科学/技术知识
They have considerable expertise in dealing with oil spills.
他们在解决溢油问题方面非常在行。
We have the expertise to help you run your business.
我们有帮助你经营自己业务的专门知识。
Personnel: the people who work for an organization or one of the armed forces (组织或军队中的)全体人员,职员
skilled/trained personnel
熟练的/训练有素的人员
sales/technical/medical/security personnel
推销/技术/医务/保安人员
army/military personnel
陆军军事人员