For instance, if you fail an exam, more often than not the reason might be found in your study habits (or lack thereof).
举个例子，假如你考试没通过，究其原因通常是由于你的学习习惯(或缺乏好的习惯)。
The best I could do was to share with him that the average time to prepare for such an exam was three months or more, with a committed study time of an hour a day or more, then I wished him good luck.
我能做到最好的，就是跟他分享，最佳的准备此类考试的时间是三个月，或者更多，每天坚持有一个小时或以上的学习时间，然后我就祝福他好运了。
The most difficult costs to avoid are those for certification study books and exam fees.
很难避免的一项开销就是认证书籍和考试费用。
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