名词
中文翻译：Unknown
同义词：
['lack of focus', 'poor concentration', "lack of attention例句：1. The student's poor focus on the test questions made him fail the exam.（学生对考试问题的注意力不集中导致他考试不及格。）"]
例句：
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1. The student's poor focus on the test questions made him fail the exam.
学生对考试问题的注意力不集中导致他考试不及格。
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2.The teacher noticed that the students were lacking in focus during the presentation.
老师注意到学生们在演讲时注意力不集中。
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3. The CEO needs to improve his poor focus on detail to ensure quality control.
首席执行官需要提高他对细节的关注，以确保质量控制。