So a baby coming into contact with a virus is ready to fight it off.

婴儿在与病毒接触的时候，它随时准备去抗击。

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And Jackson was able to fight it off. But then, more and more northern soldiers joined the fight.

尽管如此，越来越多的北方军加入到这场战斗，双方在炎热的阳光下激战数小时。

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I may feel the slight sting of isolation, but I'll fight it off because I believe in the changes that my education has allowed me to make.

我可能会因为孤立而感到一丝不悦，但我会努力克制。 因为我相信教育改变了我。

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And Jackson was able to fight it off.

VOA: special.2009.09.24

They wanted to start a fight. They would wait for someone to be brave enough to try to hit it off.

VOA: special.2010.01.17

Maybe they can fight it off.

ECONOMIST: Protecting endangered species less could help save them