Upgradeability
n. 可升级性；升级功能
🗣️ 情景例句
I think the building just needs a good cleaning.
我想那座建筑只需要好好地打扫一下。
I'm fixing the car in the garage.
我在车房修车。
Later we learnt that there was a very important person on board.
后来我们才得知，飞机上坐了一位非常重要的人物。