momentary rate

例句：

1. 1. The momentary joy of the new job was quickly replaced by exhaustion.
   新工作带来的短暂喜悦很快被疲惫所取代。
2. 2.The temporary solution to the problem was not sustainable in the long run.
   对问题的临时解决方案在长远来看是不可持续的。
3. 3. The temporary exhibition showcased a variety of art forms.
   临时展览展示了各种艺术形式。