mixed feelings是什么意思

老师好,同学们好,我是第五组的组长.我们组的project的主题是mixed feelings,首先,允许我先介绍一下自己和我的四个组员,我叫.,来自山西,他是.,来自内蒙,他是.,来自安徽,她是.,也是来自山西,他是.,来自安徽.
Hello, ladies and gentlemen, I'm the lead of Group Five. The theme of the project of our group is mixed feelings. First, let me introduce myself and the four members of my group. I'm xxx, from Shanxi; he's xxx, from Inner Mongolia; he's xxx, from Anhui; she's xxx from Shanxi, and he's xxx from Anhui.
在我们的日常生活中,我们会欢喜,会忧愁,会伤心也会兴奋,但是大家对这些情绪有一个系统的了解吗?接下来,由我们组的.开始给大家介绍我们生活中的种种情绪之一——开心.
In our everyday life, we would experience happiness, feel sadness, disappointed, or excited. But, does everybody know these feelings in a systematic way? Next, Mr. xxx from our group will show us one of the feelings in our life, happiness.