The full text of this sentence is from Kennedy's presidential inaugural address.
In his speech, he called on all mankind to unite and oppose autocracy, poverty, disease and war. After his inaugural speech, about 75% of the American people approved of the new president. This shows that Kennedy smoothly passed through the transition of power.
The full sentence is: my fellow Americans: ask not what your country can do for you--ask what you can do for your country.
Translation: My fellow Americans, don’t ask What can the country do for you, but what can you do for the country?
Extended information:
Kennedy's famous sayings
1. For in the final analysis, our most basic common link is that we all inhabit this small planet. We all breathe the same air. We all cherish our children's futures. And we are all mortal.
Translation: Ultimately, our most basic common connection is that we all live on this small planet. . We all breathe the same air. We all cherish our children’s future. We are all mortal.
2. A man may die, nations may rise and fall, but an idea lives on. Ideas have endurance without death.
Translation: A man may die, nations may rise and fall, but an idea lives on. Ideas have endurance without death.
Translation: A man may die, nations may rise and fall, but an idea lives on. It will fall; but the thought will last forever. Thoughts can bear more than death.
3. Ich bin ein Berliner!
Translation: Today, we are all Berliners!