Upgradability
n. 可升级性；升格能力；提升能力
🗣️ 情景例句
I remember when I used to be a Girl Scout.
我记得我还是一名女童子军的时候。
Who rang the bell a while ago?
刚才谁在按门铃？
While the men had been working inside the ship, the air-line had been giving off oxygen.
当工人们的在船舱里干活时，供气管一直在排放氧气。