Upgradability
n. 可升级性；升格能力；提升能力
🗣️ 情景例句
Not at all. We'll meet our general manager tomorrow.
不客气，明天带你去见一下我们总经理。
Open your eyes!
眼睛睁大点！
When I was a teenager, I felt that I was just young and uncertain --
我十几岁时，总感到自己年轻，有些事拿不准 --