奋发

例句：

1. 1. He is always working hard to improve his English.
   他一直在努力提高他的英语水平。
2. 2. She has been striving for excellence in her studies.
   她一直在努力学习以求卓越。
3. 3. We must strive for progress and innovation in our work.
   我们必须努力在工作上取得进步和创新。