Upgradeability
n. 可升级性；升级功能
🗣️ 情景例句
I just can't seem to win tonight.
我今晚看起来是不能赢了。
I would like to call a carpenter to come this afternoon.
我要叫一个木匠今天下午来。
It is hard for us to realize nowadays how difficult it was for the pioneers.
我们今天很难想像昔日的登山先驱们是多么艰苦。