Upgradeability
n. 可升级性；升级功能
🗣️ 情景例句
Have you ever done supervisory work?
你担任过管理工作吗？
Do you like traveling?
你喜欢旅游吗？
It is as if a single unimportant event set up a chain of reactions.
好像是一件无关紧要的小事引起了一连串的连锁反应。