1. It can abnegate useless samples and make the knowledge of study objects accumulate. 该算法舍弃对最终结论无用的样本，使得学习对象的知识得到了积累。
2. What a real growth is need courage and faith to try new thing and abnegate old things. 真正的成长是要有勇气和信心去尝试新的事物，同时放弃旧有的事物。
3. I know that my ideal is now very far away from me, and there will be a lot of difficulties to face, but I will never give up, I must complete own ideal, never abnegate. 我知道现在离自己的理想还是很远很远的，而且还会遇到很多困难阻碍，但我是不会放弃的，我一定要完成自己的理想，永不气馁。
英英解释
v.
1. deny oneself (something); restrain, especially from indulging in some pleasure
2. surrender
3. deny or renounce
