德国莱比锡大学的研究人员召集了1000多名75岁以上的退休工人，并通过一系列的测试评估了这些志愿者的记忆力和思维能力。

Researchers from the University of Leipzig in Germany gathered more than 1,000 retired workers who were over age 75 and assessed the volunteers' memory and thinking skills through a battery of tests.

youdao

我妈妈今年57岁，是个退休工人。

My mother is fifty-seven years old. She is a retired worker.

youdao

爸爸：因为他们是退休工人。

Father: Because they are retired workers.

youdao