a half-hearted attempt
a half-hearted apology
half-hearted support
a half-hearted effort
A: Why didn't you study hard for the exam?
A：你为什么没为考试努力学习？
B: I only gave a half-hearted effort because I was so tired.
B：我只是敷衍着学了一下，因为我太累了。
1) 敷衍的
2) 不热心的
3) 勉强的
1. 敷衍的；不热心的
adjective
1. Lacking enthusiasm or interest; not sincere or energetic.
Synonym: unenthusiastic, lukewarm, perfunctory