a group of

• 一组； 一群； 一伙

a group of的用法和样例：

例句

1. He selected a team for the special task.
   他为这项特殊任务挑选了一组人马。
2. A group of plainclothes police went into the house.
   一组便衣警察进入住宅。
3. We came up with a group of tourists.
   我们赶上了一群旅游者。
4. The boys on that street are a rough crew.
   那条街上的男孩是一群粗野的孩子。
5. A group of us went out to a bar last night.
   昨晚我们一伙人去酒吧了。
6. A body of the enemy hung upon their rear.
   一伙敌人紧紧地跟在他们的后面。