vacancy

n.空缺；空白；失神

We still have vacancies for secretaries but other positions have been filled. 我们的秘书名额尚有空缺，但其他职位都满了。

I see a vacancy board outside for a kitchen helper. Is it still available? 我在外面招工牌上看到有个厨房帮手的空缺。这空位现在还有吗？

This will help to fill a vacancy in our knowledge. 这有助于弥补我们知识上的空白。

We noticed a look of vacancy on his face. 我们觉查到他脸上有一种茫然若失的神情。