adj.空闲的，茫然的，空着的，未被占用的，(职位)空缺的，无神的，呆滞的，若有所失的

When teacher called his name, he looked up with a vacant expression.
当老师叫他名字的时候，他抬头一脸迷茫。
The position of general manager has been vacant for 2 years.
总经理的职位空缺两年了。
I feel vacant after the exam.
考试过后我感到空虚。
The house was completely vacant, giving it an eerie feeling.
这房子完全空无一人，给人一种诡异的感觉。
The office will be vacant next week as the manager is on vacation.
经理下周休假，办公室会空着。
The job position remains vacant until we find the right candidate.
这个职位会一直空缺，直到我们找到合适的候选人。
The hotel had several vacant rooms available for booking.
酒店有几间空房间可供预订。
The once bustling street was now strangely vacant after dark.
这条曾经熙熙攘攘的街道在天黑后变得异常空旷。
The parking lot was largely vacant due to the holiday weekend.
由于是假日周末，停车场大部分空着。
The chair stood vacant at the head of the table, signifying the absence of the president.
主席台上的椅子空着，表示总裁不在。
The classroom was entirely vacant except for a lone student studying in the corner.
教室里除了角落里一个独自学习的学生外，空无一人。
The company's top position has been vacant for months since the CEO resigned.
自从CEO辞职以来，公司的最高职位已经空缺了几个月。
The theater had a few vacant seats despite the popular play running.
尽管正在上演一出热门剧目，但剧院还是有几个空座位。