1. The water and soil preservation project was set up in 1989. ���е�ˮ��������Ŀ��1989�꿪ʼ�����ġ�
2. We significantly influence or control the selection, organization, preservation, and dissemination of information. �����൱Ӱ����߿���ѡ����֯���������Ϣ�Ĵ�����
3. Irradiation is a new process of food preservation, which has tremendous development foreground and practical value. ���ձ�����ʳƷ���ʵ��¹��գ����ż���ķ�չǰ����ʵ�ü�ֵ��
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n.
1. the activity of protecting something from loss or danger
2. the condition of being (well or ill) preserved
3. a process that saves organic substances from decay
4. an occurrence of improvement by virtue of preventing loss or injury or other change