Television has an important role to play in popularizing new scientific ideas.电视在普及科学新知识方面发挥着重要的作用。Much new knowledge is remote from the immediate interest of the ordinary person.许多新知识与普通人目前的利益关系甚远。In the computer industry, engineers have to retool frequently.在电脑业中，工程师必须经常以新知识充实装备自己。