I once wanted to be an astrophysicist.

Even now, many years after the Cold War, there is still much rancor between the Russians and the Germans, especially in areas once occupied by the Soviet Union.

For once in my life I'm doing a good deed... And it is useless.

You must apologize to her, and that at once.

You may as well leave at once.

You must go home at once.

It is necessary for you to see a doctor at once.

It is necessary that you start at once.

You must make up your mind, and that at once.

You look pale. You had better lie down in bed at once.

You are to start at once.

You needn't do it at once.

You must do it at once.

You'd better have your hair cut at once.

You may as well go to bed at once.

You may go at once.

You'd better set off at once.

It is necessary for you to start at once.

You had better start at once.

You may as well begin at once.

You are to give up smoking at once.

You are to do it at once.

You'd better go to see your family doctor at once.

You ought to do it at once.

You had better get away from here at once.

Once you begin, you must continue.

You have to report to the police at once.

If I find your passport, I'll call you at once.

You are entitled to try once again.

You must start at once.

It is imperative for you to act at once.

You must do your homework at once.

To our surprise, she revived at once.

We can lift the restrictions on imports once the joint agreement is signed.

Kyoto is worth visiting once.

I have been to Kyoto once.

Mr Yoshida directed me to come at once.

That game is easy, once you learn the basic rules.

The school drains the pool once a month.

No matter how busy he was while living abroad, he never failed to write home to his parents at least once a week.

Once outside, I gave a deep sigh of relief.

We painted the house once, then we went over it again.

We must look into the matter at once.

We have to start at once.

We started all at once.

We expect you to carry out what you have once promised.

In our culture, we can't be married to two women at once.

Our teacher is at once stern and kindly.

Our top priority is to settle this dispute once and for all, so we are ready to meet them halfway.

All at once the bride burst into laughter.

He contends that primitive life once existed on Mars.

It was not easy to put out the fire at once.

The fire was extinguished at once.

If I've told you once, I've told you a thousand times.

If something goes wrong, you should attend to it at once.

Wire me at once, in case there should be an accident.

It's no good waiting for something to happen; you must take action at once.

Mistakes in the printing should be pointed out at once.

I'm going to give you a year's worth of allowance all at once.

Once you have made a promise, you should keep it.

A stone once cast, and a word once spoken, cannot be recalled.

A stone once cast, and a word once spoken, cannot be recalled.

I remember seeing her once on the street.

Once across the river, you are safe.

Once a habit has been acquired, it has almost compulsive power over us.

Once lost, time cannot be recalled.

It is not too much to say that time once lost can never be recovered.

Once gone, you will never get it back.

Once we've killed, we enjoy killing.

Once you have decided to do something, stick to it.

I haven't met him even once.

I wish for once I could be something.

Once you leave here, you can't come back again.

Youth comes but once in life.

She told him once and for all that she would not go to the movie with him.

Once you skip a lesson, it's hard to catch up with your classmates.

The doctor decided to operate at once.

We agree to start at once.

The committee was summoned at once.

Having seen him before, I knew him at once.

I had met him once before.

A recent analysis by Boeing forecasts that unless safety is improved, jet airliners could be falling out of the sky at the rate of once a week by the year 2010.

A bad habit, once formed, cannot easily be got rid of.

Once you've got into a bad habit, it can be difficult to get out of it.

A bad habit, once formed, is difficult to get rid of.

You have to apologize at once when you have done wrong.

How difficult a thing it is, to love, and to be wise, and both at once.

We die only once, and for such a long time.

I swim once a week.

I used to go to plays at least once a week in London.

Once I learned what to listen for, I came to appreciate modern jazz.

If he would help you, he might come to you at once.

If he doesn't get a letter from me once a month, he will reveal the Pope's secret to the world.

If I were you, I would go home at once.

Were I in your position, I would do it at once.

If the delay is simply an oversight, will you please take care of it at once?

If you find the man, please let me know at once.

Set your translation against the original once again.

Explain it once more, Jerry.

Had he tried it once more, he would have succeeded in it.

Will you let me try once more?