You can pay to be upgraded to a business class seat.你可以付费升级到商务舱。Helicopters have been upgraded and modernized.直升机已经更新换代，装配了现代化设备。They upgraded the land by improving it with new buildings.他们建造新楼房来提高土地的等级....
Medical facilities are being reorganized and upgraded.正在对医疗设施进行重组和升级。She sent her provisional licence with the test certificate to have it upgraded to a full licence.她将临时执照连同考试证书一起提交上去以申请升级为正式执照。You can pay to be upgrade...