at a time

• Expressão usada para indicar que algo acontece em casos ou grupos separados e sucessivos, frequentemente enfatizando um processo gradual ou metódico; também pode significar simultaneamente, em um mesmo momento.

A phrase used to indicate that something happens in separate, sequential instances or groups, often emphasizing a gradual or methodical process.

1. In one instance or periodA2formal

   Used to indicate that something happens in separate, individual instances or groups.

   De cada vez

   • He carried the boxes one at a time.
   • She answered the questions one at a time.
   • You can only take two items at a time from the shelf.

2. During a specific periodB1formal

   Referring to a particular moment or period in the past.

   Naquela época

   • At a time when computers were rare, he built his own.
   • She was very happy at a time in her life when she lived abroad.
   • At a time of crisis, people often come together.