| 例句 |
A nasty flu bug is going round (the school) at the moment.眼下一种传染性很强的流感病毒正在（学校）传播。He had a bad dose of the flu virus that was going around.流感病毒在传播，他得了重流感。There are many different strains of flu virus.流感病毒有很多不同类型。Every year new strains of influenza develop.每年都有新的流感病毒出现。 |