积极性

例句：

1. 1. The team showed a high level of enthusiasm for the new project.
   团队对新项目表现出了高度的热情。
2. 2. He was full of enthusiasm for his work.
   他对工作充满了热情。
3. 3. The teacher encouraged students to be more enthusiastic in their studies.
   老师鼓励学生在学习上更加积极主动。