1. The World Health Organization says the outbreak has "pandemic potential". ����������֯˵������ȫ���Ŀ����ԡ�
2. As of Tuesday officials had not yet announced a change from phase 5. But Doctor Fukuda said the public should understand what a pandemic means. �����ܶ�����������֯��Ա��δ�����ı伶��5����������ҽ��˵�����ڣ���Ȩ�����������д����еĺ��塣
3. Airline travel has a significant effect on the spread of influenza, a new study reports, raising the question of whether flight restrictions may be helpful in controlling a pandemic. һ���µ��о��������������ж������Ը�ð�Ĵ��������ش�Ӱ�죬��������һ�����⣬���Ʒ����Ƿ������ڿ������С�
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n.
1. an epidemic that is geographically widespread; occurring throughout a region or even throughout the
2. epidemic over a wide geographical area
3. existing everywhere