halfhearted

例句：

1. 1. He was halfheartedabout finishing the report.
   他对完成报告的态度是不认真的。
2. 2. She was halfhearted at school, not taking it seriously.
   她在学校的学习态度是不认真的，没有认真对待。
3. 3. The teamwas halfhearted in their performance, lackingpassion and dedication.
   团队在表现上是敷衍了事的，缺乏激情和奉献精神。