Suddenly a train of ideas came across my mind and finally I managed to solve this problem.
突然一连串的想法出现在我的脑海中，最终我成功地解决了这个问题。
A whole fresh train of ideas, hopeless, but mournfully sweet, stirred up in Prince Andrey's soul in connection with that oak.
由于这棵老橡树的关系，又有一序列绝望的、但都是忧喜掺半的思想在安德烈公爵的心灵中出现了。
In addition, understand all sorts of basic ideas even deeply, master the regular method that solve a problem, skill, train particular solution to inscribe integrated ability.
此外，还要深刻理解各种基本概念，掌握一定的解题方法、技巧，训练一定的解题综合能力。
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