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ADJ
教学的，学业的（尤指学识方面而非实践、技能上的）
Academic is used to describe things that relate to the work done in schools, colleges, and universities, especially work which involves studying and reasoning rather than practical or technical skills.
例句
Their academic standards are high...
他们的教学水平很高。
I was terrible at school and left with few academic qualifications...
我的学习成绩一塌糊涂，离校时几乎没有学历。
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ADJ
学校的;学院的;大学的
Academic is used to describe things that relate to schools, colleges, and universities.
例句
...the start of the last academic year...
最后一个学年的开始
I'd had enough of academic life.
学生生活我已经过够了。
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ADJ-GRADED
学术的,重研究与思辨的（与重实践或技能相对）
Academic is used to describe work, or a school, college, or university, that places emphasis on studying and reasoning rather than on practical or technical skills.
例句
The author has settled for a more academic approach...
那位作者已确定采用更为学术的方法。
Different schools teach different types of syllabus, from the highly academic to the broadly vocational.
不同的学校有不同的教学计划，从高度学术的到普通职业教育的，不一而足。
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ADJ-GRADED
学业优秀的
Someone who is academic is good at studying.
例句
The system is failing most disastrously among less academic children.
这种制度对学习不太好的孩子效果最差。
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N-COUNT
大学教师；高校科研人员
An academic is a member of a university or college who teaches or does research.
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ADJ-GRADED
学究式的；空谈的；不切实际的
You can say that a discussion or situation is academic if you think it is not important because it has no real effect or cannot happen.
例句
This was not an academic exercise — soldiers' lives were at risk...
这不是纸上演习——士兵的生命受到了威胁。
Such is the size of the problem that these arguments are purely academic.
问题的实情在于这些论点纯属空谈。