[] (usuallythe front line) the area of greatest activity, where you can have an important effect on sth前线；最重要的岗位◆The company is in the front line of the global telecoms industry.这家公司处于全球电讯产业的前线。the group of employees in a company who deal directly with customers or who physically produce sth; the work that they do（公司里的）一线员工；一线工作◆Managers weren't giving feedback to the people on the front line.管理者没有给一线人员反馈。