Upgradeability
n. 可升级性；升级功能
🗣️ 情景例句
You have that look in your eye.
你看起来好像有了主意似的。
I'm not sure what time I'm coming back.
我不肯定我什么时间回来。
At 2,473 metres, it is the highest mountain pass in Europe.
海拔2，473O米，是欧洲最高的山口。