你从这个项目中学到了什么?我学到了许多有关回收利用方面的知识
What have you learned from this project?
I have obtained some knowledge of recycling.谢谢。 那个婴儿为什么那么高兴？ 她高兴是因为她刚刚吃东西了。麻烦了，翻译完这个，我给你设满意回答..Why is the baby so happy?Because she's just finished eating.