做事不起劲的

例句：

1. 1. The team's performance was unenthusiastic, lacking in passion and drive.
   团队的表现缺乏热情，缺乏激情和动力。
2. 2. The new manager brought a fresh perspective to the company, but his staff were unenthusiastic about change.
   新任经理为公司带来了新的视角，但他的员工对变革缺乏热情。
3. 3. Despite the lack of enthusiasm, the project still had potential for success.
   尽管缺乏热情，这个项目仍有成功的可能性。