the government keeps under view changes in demand for air services 政府一直观察航空服务需求的变化。
change in demand 与需求量变化
capacity auction and pricing ( “ airline pricing ” ) to be executed in real-time to manage changes in demand and capacity 实行实时的能力竞拍和定价,由此来管理需求和能力的变化。
but the more significant change, of which we have to take account, is the effect of changes in demand both on costs and on volume 但是,我们必须考虑的更重要的变动是,需求的变动对成本和产量这二者的影响。
they have the great advantage of flexibility, in that they can adjust their service patterns to meet changes in demand in a relatively short time 巴士的优点是灵活,能够在较短的时间内,因应需求的转变而调节其服务模式。