Their duty is to ensure that all pupils in their group understand and practice what the teacher has taught.
他们的职责是确保他们组里的所有学生都理解和实践老师教的东西。
2
You see, I have joined this group, the University Jazz Band, and the band's practice time is right around dinner time.
你看，我加入了这个团体，大学爵士乐队，乐队的练习时间大约就在晚饭的时候。
3
We could have a small group of experts defining best practices from a Centre of Excellence or best practicegroup, and we could roll these out across the enterprise.
我们可以有一组来自“卓越中心(Centre of Excellence)”或“最佳实践小组(Best Practice Group)”的专家，让他们制定最佳实践，并将其在整个企业中推行。