dürfen

мочь

to be allowed (to do something); to be permitted (to do something); may

• Kinder sollen Kind sein dürfen.

  Children should be allowed to be children.

  Tatoeba · al_ex_an_der · CC BY 2.0 FR

• Ich glaube, das dürften wir nicht.

  I don't think we'd be allowed to do that.

  Tatoeba · Waldelfe · CC BY 2.0 FR

мочь

to be allowed or permitted to do something implied or previously stated; may

• Darf ich nach Hause gehen?

  Можно мне пойти домой?

  Tatoeba · Esperantostern · CC BY 2.0 FR

• Du darfst nach Hause gehen.

  Можешь идти домой.

  Tatoeba · Sudajaengi · CC BY 2.0 FR

мочь

expresses a prediction with mild doubt, that something is estimated or probableредкое

мочь

must, to have [got] to, gottaредкое

мочь

to need, to requireредкое