I'm afraid we can't work out the math problem unless the teacher helps us.
如果老师不帮助我们，恐怕我们解不出这道数学题。
To my amazement, he has worked out the math problem that our math teacher couldn't do.
令我感到诧异的是，他已经做出了那道连数学老师都不会做的数学题。
If you can't work out the math problem in this way, why not try doing it in another way.
如果用这种方法你解不出这道数学难题，为什么不试着换一种方式呢？
I work at the math problem for over one hour, but I can't work it out.
这道数学题我做了一个多小时，可是我解不出来。
Just like the math problem, is a test of intelligence, a game of ratiocination and a race of time.
就像数学题目，是一场智力的考验，推理的比赛和时间的竞逐。
We were all laughing up our sleeves at the teacher when he was up at the blackboard explaining the math problem.
我们当时都在偷偷笑正在黑板前讲解数学题的老师。
How I want to turn back the hands of time, flow back to the test that moment, I again carefully look at the math problem!
我多想让时光倒流，流回考试的那一瞬间，我再仔细的看一下那道数学题！
The math problem is so easy and the students can solve it easily.
这道数学题很简单，学生们很容易就能解出来。
The math problem is so easy and the students can solve it easily.
这道数学题很简单，学生们很容易就能解出来。
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