经过三年的努力学习，他终于赶上了他的同学。
After three years of hard work, he finally caught up with his classmates.
经过三年的不断学习后，在专注的要求下我看的就不再是整条牛了。
After continual practice for three years, my attention is more focusing than before that I see only a given part of bullock at a time.
我的英语不是很好，但我会认真学习，相信经过三年的努力，我一定能讲一口流利的英语。
My English isn't very good, but I will hard study, believe after three years of effort, I can definitely speak one mouthful fluently English.
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