You use provisional to describe something that has been arranged or appointed for the present, but may be changed in the future.
例句
...the possibility of setting up a provisional coalition government...建立一个临时联合政府的可能性If you have never held a driving licence before, you should apply for a provisional licence...如果你从未有过驾照,那就应该申请一个临时的。
英汉词典释义
adj.
暂时的;临时的
All these conclusions are provisional.所有这些结论都是暂时性的。
英英词典释义
Adjective
1. under terms not final or fully worked out or agreed upon;
"probationary employees""a provisional government""just a tentative schedule"