They train hard for the Olympics.
他们为奥运会刻苦训练。
To prepare for the test, many junior high school students try their best to train hard.
为了准备考试，许多初中生尽最大努力刻苦训练。
Similarly, you can't train hard for more than three or four months at a time.
同样你不可能一次进行三到四个月的艰苦训练。
If you want to lose weight or gain muscle, you need to train hard for weeks on end to see results.
如果你希望减轻体重或者增长肌肉，你需要去刻苦地训练几周然后才能看到结果。
Athletes who train hard inaerobic(6)sports, such as cycling, running or swimming, tend to have a bigger heart that pumps more blood throughout the body.
从事强烈有氧运动如骑车、跑步或者游泳的运动员的心脏容易大于常人的，因为他们需要更快的血液循环。
The aim is to encourage athletes train hard and strive to improve their skills.
其目的是为鼓励运动员刻苦锻炼，努力提高运动技术水平。
Full-back is a really important position and a difficult one, which is why you have to train hard every day.
边后卫是个很重要的位置，也很难打。这就是为什么你必须每天努力训练。
Now there are four games left before the Christmas break, which will allow us to train hard and recover physically.
现在在冬歇期之前还剩四场比赛，这会使得我们更加努力的训练，并且体力很快就会得到恢复。
"I also thank him for giving me the chance of playing some minutes this season." I work and train hard everyday and show the coach that I am ready for when he thinks it's necessary.
我每天都非常努力地工作和训练，向教练展示我时刻准备着，当他觉得必要的时候。
"I also thank him for giving me the chance of playing some minutes this season." I work and train hard everyday and show the coach that I am ready for when he thinks it's necessary.
我每天都非常努力地工作和训练，向教练展示我时刻准备着，当他觉得必要的时候。
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