1·A group of psychologists from the University of Arizona and Washington University in St. Louis set out to find whether happy and unhappy people differ in the types of conversations they tend to have.
来自亚利桑那大学和华盛顿大学圣路易斯分校的一队心理学家开始着手研究快乐的人和不快乐的人各自可能发生的谈话种类是否会有所不同。
2·Suddenly, Mason and a group of agents surround them.
忽然，梅森和一队探员包围了他们。
3·A group of armed guards have arrived and are waiting outside the gate.
一队武装警卫抵达并守卫在牢房区大门处。
4·And as you know, that captain of the merchant ship that was held captive by three Somali pirates was rescued when the pirates were shot and killed by a group of Navy Seals.
就像你们知道的的那样，被三个索马里海盗抓住的商船船长获救了，海盗们被一队海军击毙。
5·I saw a group of soldiers marching on toward that mountain.
我看到一队士兵向那座山里进发了。