vt. 及物动词提升；使（机器、计算机系统等）升级；提高（设施、服务等的）档次；提高（飞机乘客、旅馆住客等）的待遇
We decided to upgrade our computer systems this year.
我们决定今年升级我们的计算机系统。
The software upgrade will improve the app's performance significantly.
软件升级将显著提高应用程序的性能。
After the upgrade, the car's engine was much more efficient.
升级后，汽车的发动机效率提高了很多。
They offered a free upgrade to first class on our flight.
他们为我们的航班提供了免费升级到头等舱。
We need to upgrade our security system for better protection.
我们需要升级安全系统以获得更好的保护。
The phone's latest upgrade includes a better camera and battery life.
手机的最新升级包括更好的摄像头和电池寿命。
Our company plans to upgrade the office facilities next month.
我们公司计划下个月升级办公设施。
She was happy to upgrade her old laptop to a new model.
她很高兴将旧笔记本电脑升级到新型号。
To improve efficiency, we must upgrade our current software.
为了提高效率，我们必须升级当前的软件。
The hotel offered us a complimentary room upgrade upon arrival.
酒店在我们到达时为我们提供了免费房间升级。
upgrade the system 升级系统
upgrade the software 升级软件
upgrade the hardware 升级硬件
upgrade your skills 提升你的技能
upgrade the network 升级网络
upgrade the service 提升服务
upgrade the infrastructure 升级基础设施
第三人称单数: upgrades;
过去式: upgraded;
过去分词: upgraded;
现在分词: upgrading;
v. 动词（为了进攻、威胁等）前进；（知识、技术等）发展，进步；预支；提前；促进，推动；提出（理论等）；（价格等）上涨
n. 名词前进；进步，进展；预付款；追求；（价格等）上涨，提高
adj. 形容词先行的；预先的
