Unavailability
[计] 无效性, 不可用性
🗣️ 情景例句
It's my favorite outfit.
这是我喜欢的那一套。
Have you somewhat to do tomorrow,do it today.
明天如有事，今天就去做。
They devise hundreds of competitions which will enable us to win huge sums of money.
他们设计数以百计的竞赛，竞赛中有人可赢得巨额奖金。