un·a·vail·a·bil·i·ty
noun/ˌʌnəveɪləˈbɪləti/
/ˌʌnəveɪləˈbɪləti/
[uncountable]- the fact that something cannot be obtained
无法得到；难以获得 - Many of the problems were caused by the unavailability of suitable equipment.
许多问题是由于没有合适的设备造成的。
- Many of the problems were caused by the unavailability of suitable equipment.
- the fact that somebody is not able or not willing to see, meet or talk to somebody
不能（或不愿）见面；不能（或不愿）交谈 - The trial was adjourned due to the unavailability of a key witness.
由于关键证人缺席，审判延期。
opposite availability - The trial was adjourned due to the unavailability of a key witness.