simultaneity

例句：

1. 1. The two events occurred simultaneously, meaning they happened at the same time.
   这两个事件同时发生，意味着它们在同一时间发生。
2. 2.The scientists observed that the particles moved in synchronous patterns.
   科学家们观察到粒子以同步模式移动。
3. 3.The music was played simultaneously across different locations.
   音乐在不同地点同时播放。