求翻译：2012年春节，我们一家回到了吉林省延吉市的姥姥家。最大的收获是和姐姐一起参加了少年宫航模科技活动，学会并展示自己的作品。是什么意思？

2012 Chinese New Year, our family returned to the city of Yanji, Jilin Province grandmother home. Greatest achievement is to join the Children's Palace and sister model aircraft science and technology activities, learn and showcase their work.

2012 Spring Festival, our family returned to the Yanji, Jilin Province, the grandmother. The greatest gains, and her sister aircraft models, participate in the Children's Palace and science and technology activities, to learn and to show their works.

In 2012 the Spring Festival, our returned to Jilin Province Yenchi city grandmothers the family.The biggest harvest was and the elder sister participated in the children's palace model ship science and technology activity together, the academic society and demonstrates own work.

2012 Spring Festival, we went back to the grandmother in Yanji City, Jilin province. The biggest reward is airplane technology activities and sister participated in the children's Palace, learn and show their work.