one by one

• Наречное выражение, означающее каждого отдельного человека или предмет в последовательности, одного за другим.

An adverbial phrase meaning each individual person or thing in a sequence, one after another.

1. Sequentially, individuallyA2formal

   Each person or thing in a group, one after another.

   По одному

   • The students entered the classroom one by one.
   • She checked the items on the list one by one.
   • The candles were lit one by one during the ceremony.