upgrade

4.~ sth提高（设施、服务等的）档次；改善；使升格to improve the condition of a building, etc. in order to provide a better service

1.〈美〉上坡(的);上升(的)

1.往山上,上坡

1.提升(...级别);提高(重要性,质量等);使升级

1.a piece of equipment or software designed to make a computer more powerful; the process of upgrading a computer

2.the fact of being given a plane seat or hotel room that is better than the one that you have paid for

1.to make a computer or other machine more powerful or effective; to improve the quality of a service or product

2.to officially give someone or something a higher status; to give people a better seat on a plane, or a better hotel room, than the one that they have paid for