To reduce the likelihood of collisions, we can break this network into two collision domains by using a Network Switch.
为了减少冲突的可能性，我们可以使用网络交换机将这个网络分成两个冲突域。
科技 Crash Course
Let go back to our earlier Ethernet example, where we had six computers on one shared cable, a.k.a. one collision domain.
让我们回到我们之前的以太网示例，我们有六台计算机在一条共享电缆上，也就是一个冲突域。
英语百科
Collision domain
A collision domain is a section of a network connected by a shared medium or through repeaters where data packets can collide with one another when being sent, particularly when using early versions of Ethernet. A network collision occurs when more than one device attempts to send a packet on a network segment at the same time.