People tend to work hard at this stage of life.
人在这个人生阶段往往发奋努力。
I hope you work hard at English and make progress every day.
我希望你们努力学习英语，天天向上。
我在学校努力学习。
在学校我努力学习。
I work hard at all my lessons.
我努力学习各门功课。
I work hard at home and school.
我在家里和学校里都很努力。
我们应该努力学习英语。
We must work hard at our lessons.
我们一定要努力学习功课。
We must work hard at our lessons.
我们必须努力学习功课。
You must work hard at your lessons.
你应该努力学习功课。
We must work hard at all our lessons.
我们必须努力学习各门功课。
我努力学习英语。
You should work hard at your lessons.
你应该努力学习功课。
We must work hard at it until we succeed.
一定要坚持不懈的努力直到成功！
We encouraged him to work hard at English.
我们鼓励他努力学习英语。
At school, I work hard at all the subjects.
在学校，我努力学习所有的科目。
As a teenager, I should work hard at my lessons.
作为青少年，我应该努力学习功课。
He found it his duty to work hard at all his subjects.
他觉得努力学习所有的功课是他的职责。
You could work hard at something without getting far at all.
你完全有可能努力工作却一事无成。
They work hard at home - on holidays, they want to chill.
在国内他们辛苦工作——在假期，就可以轻松一下。
No matter what your job is, you should work hard at it.
不管你的工作是什么，你都需要努力工作。
For people who work hard at this company, the sky's the limit.
在这家公司努力工作的人会前途无量。
We can improve our English as long as we work hard at it.
只要我们在英语学习上下功夫，就能提高英语水平。
We must work hard at a foreign language so as to master it.
为了掌握外语，我们必须下苦功夫。
I work hard at my lessons in order to enter a key university.
我努力学习功课是为了进入一所重点大学。
The only way to get better is to work hard at changing our beliefs.
唯一改善的方式是努力改变自己的信念。
The only way to get better is to work hard at changing our beliefs.
唯一改善的方式是努力改变自己的信念。
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