coincidence of orders

例句：

1. 1. The two events happened atthe same time, which is a coincidence.
   这两个事件同时发生，这是巧合。
2. 2. The scientist's theory coincides with thedata collected by the team.
   科学家的理论与团队收集的数据相吻合。
3. 3. It wasa coincidence that both of them werein the same city for the conference.
   他们俩都在同一个城市参加会议，真是巧合。