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- 她已刻苦攻读法语数月。
She's been plugging away at her French lessons for months.
- 考期临近了，所以学生们确实在刻苦钻研。
Now that the exam is near, the students are really going at their studies.
- 讲一口流利的英语需要多年的刻苦操练。
It took years of hard work to speak good English.
- 大部分学生都有礼貌，非常刻苦，不过也有几个差的。
Most students are polite and hardworking but there are a few rotten apples.
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