Flu symptoms can be severe, and even fatal, when the illness strikes young children or the elderly.

当病毒攻击幼儿或老人时，流感症状可能很严重甚至是致命的。

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Of those, just a handful die, making fatal shark attacks less likely than lightning strikes.

其中，只是少数人死亡，鲨鱼袭击死亡率可能还不如雷击。

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Of those, just a handful die, making fatal shark attacks less likely than lightning strikes.

其中，只是少数人死亡，鲨鱼袭击死亡率可能还不如雷击。

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