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The way swine flu is spreading meets the WHO's somewhat rigid guidelines for what constitutes a pandemic.
流感病毒的传播方式符合世卫组织对大流行有点刻板的规定。
youdao
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The way swine flu is spreading meets the WHO's somewhat rigid guidelines for what constitutes a pandemic.
流感病毒的传播方式符合世卫组织对大流行有点刻板的规定。
youdao