形容词
中文翻译：不认真的
同义词：
['unwilling', 'unenthusiastic']
例句：
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1.He was half-hearted about helping his friend with the project.
他对帮助朋友完成项目的态度是不认真的。
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2. The teacher noticed that the student was half-hearted in class.
老师注意到那个学生在课堂上态度不认真。
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3.She was half-hearted about finishing her homework on time.
她对按时完成作业的态度是不认真的。