Thee fourth enemy within is worry.

第四个内在的敌人是担忧。

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The most familiar type of enemy within is the fraudster.

最为人熟悉的内贼是骗子。

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When there is no enemy within, the enemies outside cannot hurt you.

当你的心中没有敌对的声音，再多外在的敌人都无法伤害到你。

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And the reinvention in the nineteenth century of British identity will also have a lot to do with fear of the Irish, "The enemy within," As they were perceived.

十九世纪英国民认同感的重建,和对爱尔兰的惧怕也有很大关系,"家贼难防",他们是这样看待爱尔兰的

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"This gives you a chance to wonder about the enemy within, because that's what this story is about, " says Samuel L. Jackson, who plays one of the explorers.

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Ironically, the enemy within is all in the Zuckerberg family.

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It charts Margaret Thatcher's permanent struggle in 11 long years in office against the doubters in her own party, those she regarded as "the enemy within" - whether in the trade unions or the IRA - and "the enemy without" - Soviet Communists and the Argentine junta who ordered the invasion of the Falklands.

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