Hep birden koşmaya başladılar.
 - They began to run all at once.
Birdenbire, o konuştu.
 - All at once, he spoke out.
Bu birdenbire olmadı.
 - It didn't happen all at once.
Aniden bir patlama oldu.
 - All at once there was an explosion.
Aniden gökyüzü karardı ve yağmur başladı.
 - All at once the sky became dark and it started to rain.
When all at once I saw a crowd, A host, of golden daffodils - William Wordsworth, Daffodils.