Upgradeability
n. 可升级性；升级功能
🗣️ 情景例句
The number you are calling -- 555-8448 --
你打的电话号码555 8448
Mountains look beautiful from a distance.
远处看山山更美。
No, thank you. Thanks for all your help.
不必了，谢谢。谢谢你帮了我大忙。