这种东东有一个很大的局限性，那就是它的工作方式方法是作者事先设置好的。
That there has been a great Dongdong limitations, that is, ways and means of its pre-set a good author.
总体说，喜欢这个车。由于在方向盘下的东东非常好，所有的问题都可抛到一边。
Generally I love this car. All the problems can be forgiven because its just a great place to be behind the wheel.
非常好的东东，可以用来求解常微分方程。
Dongdong very good and can be used to solve ordinary differential equations.
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