vacant

adj.

1. 未被占用的, 空的
   • There were many vacant seats in the theatre.
     剧院里有许多空座位。
   • Is the lavatory vacant?
     厕所里没人吧?
2. (指职位)空缺的
   • Are there any vacant positions in your firm?
     你们公司有空缺吗?
   • The top post in the delegation was still vacant.
     代表团中的最高职位仍空着。
3. 茫然的, 空虚的
   • He stared into space with a vacant expression.
     他茫然地凝视着天空。
   • His mind seems completely vacant.
     他的头脑似乎空空如也。