Ten new cases of bird flu were reported yesterday.

昨天新增十例禽流感病例报告。

What is bird flu?

禽流感是什么？

She is the eighth person who died of bird flu in that country.

这名女患者是该国第8个死于禽流感的人。

Researchers have been determined to figure out how bird flu spreads from human to human worldwide.

研究人员下决心要弄清楚禽流感在全球范围内是如何在人与人之间传播的。

Why can't bird flu be eradicated?

为什么不能根除禽流感？