1. On the other hand, moving persistent objects themselves can hamper navigation. ��һ���棬�ƶ��־ö��������ܷ���������
2. The success in any sphere of human activity is often attributed to intense interest plus persistent efforts. �����κλ����ijɹ���������������ǿ�ҵ���Ȥ�Ͳ�и��Ŭ����
3. The most important thing for one who is pursuing success is to find a goal that deserves persistent contribution. ������ɹ�������ǰ������Ҫ��һ����������ҵ�ֵ��Ϊ֮��ֵ�Ŀ�ꡣ
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adj.
1. never-ceasing
2. continually recurring to the mind
3. retained; not shed