This problem is too difficult for me. Can you give me some hints?
这道题太难了，能给点儿提示吗？
This problem is too difficult.
这个问题很难。
This problem is too difficult for me to solve.
这个问题太难，我解决不了。
The problem is too difficult for me to work out.
这道题太难了，我做不出。
This problem is too difficult. Please think it over.
这个问题很难。请仔细考虑一下。
The math problem is too difficult for me to work out.
这道数学题太难，我解不出来。
This math problem is too difficult for me to work out.
这道数学题太难，我做不出来。
The maths problem is too difficult for me to work out.
这道数学题太难我解不出来。
The key problem of training support vector machines is how to solve quadratic programming problem, but for large training examples, the problem is too difficult.
训练支持向量机的本质问题就是求解二次规划问题，但对大规模的训练样本来说，求解二次规划问题困难很大。
The key problem of training support vector machines is how to solve quadratic programming problem, but for large training examples, the problem is too difficult.
训练支持向量机的本质问题就是求解二次规划问题，但对大规模的训练样本来说，求解二次规划问题困难很大。
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