Upgradeability
n. 可升級性；升級功能
??? 情景例句
He's like a little doll.
他像個小洋娃娃。
How long will I have to wait?
我要等候多久呢？
The Ambassador's wife went on asking questions, when she suddenly noticed a big hole in her husband's hat.
大使夫人繼續(xù)提出問題，她突然又發(fā)現(xiàn)丈夫的帽子上有個洞。