心不在焉

His halfhearted attempt at apologizing only made matters worse.
他那不诚心的道歉尝试反而使情况变得更糟。
The team's halfhearted effort during the game led to their defeat.
球队在比赛中的敷衍了事导致了他们的失败。
She gave a halfhearted smile, not really convinced by his explanation.
她勉强笑了笑，对他的解释并不完全信服。
The halfhearted cheers from the audience indicated their lack of enthusiasm.
观众那不冷不热的欢呼声表明了他们的热情不足。
He took on the project with a halfhearted commitment, unsure if he could complete it.
他对这个项目只有半心半意的投入，不确定自己能否完成。
Her halfhearted attempt to clean the room left much to be desired.
她那不用心的打扫尝试让房间的状态仍有很多需要改进的地方。
The halfhearted support from his friends made him doubt his decision to run for office.
来自朋友的不够坚定的支持让他对自己的参选决定产生了怀疑。
The company's halfhearted marketing campaign failed to attract new customers.
公司那不怎么上心的营销活动未能吸引到新客户。
His halfhearted embrace suggested he wasn't entirely happy to see her.
他那不太热情的拥抱表明他见到她并不完全高兴。
The teacher's halfhearted teaching style made the class unengaging and dull.
老师那种不上心的教学方式使得课堂既不吸引人又枯燥乏味。