一个个

一个个

"One by one" or "individually."

Used to emphasize each individual in a group experiencing the same emotion.

他们一个个都非常高兴。

They are all very happy one by one.

Denoting sequential distribution or action.

礼物一个个传递到学生手上。

The gifts were passed one by one to the students.

Indicating successive resolution of tasks or items.

课本上的问题一个个被回答了。

The questions in the textbook were answered one by one.