class team
班队
例句
1.我校几乎所有的班队都参加了这次篮球赛.
Almost all the class teams joined in the basketball match
mathematical activities
数学活动'
例句
1.数学阅读是阅读者在开展一项数学活动.
Mathematics Reading is reading in carrying out mathematical activities.
2.古代中国的数学活动可以追溯到很早以前.
Mathematical activities in ancient China can be traced back to early time