unavailable
- adj. 难以获得的;不能利用的;不近便的
考试真题
- The average amount of time students now take to complete an undergraduate degree has stretched to six years and seven months as students interrupted by work, inconvenienced by unavailable classes, or lured by one more football season find it hard to graduate.
出自-2012年6月阅读原文
- About half of them are unavailable on the market.
出自-2011年12月听力原文