1. It can abnegate useless samples and make the knowledge of study objects accumulate. ���㷨���������ս������õ�������ʹ��ѧϰ�����֪ʶ�õ��˻��ۡ�
2. What a real growth is need courage and faith to try new thing and abnegate old things. �����ijɳ���Ҫ������������ȥ�����µ����ͬʱ�������е����
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. ��֪���������Լ������뻹�Ǻ�Զ��Զ�ģ����һ��������ܶ������谭�������Dz�������ģ���һ��Ҫ����Լ������룬�������١�
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v.
1. deny oneself (something); restrain, especially from indulging in some pleasure
2. surrender
3. deny or renounce