Upgradeability
n. 可升级性；升级功能
🗣️ 情景例句
Life has its ups and downs, but it certainly has its rewards.
人生有沉也有浮，但是无论怎样都确有其价值。
I used to work until nearly 6:00 o'clock each day.
我过去每天常工作直到将近6:00点钟。
That's a good idea.
那真是好主意。