Upgradeability
n. 可升级性；升级功能
🗣️ 情景例句
you know how Dad is always talking about
知道爸爸时常谈起
Look! Lightening has struck the tree and it's on fire.
瞧！闪电划下来，引燃了树木。
We can't afford all that money.
我们花不起那么多钱。