English to Chinese Tech/Engineering IT (Information Technology)

This is complicated further by the fact that access points have multiple radio channels, which helps avoid interference with neighboring access points. In case of interference from a neighbor in a specific channel, an access point will simply switch traffic to a different channel. The client devices will use whatever access point provides the best signal, so they will either change channels as well or move to another access point, both of which introduce other delays.
导致情况复杂化的是接入点有多个无线电信道。接入点有多个无线电信道有助于避免邻近接入点的干扰。万一某接入点受到某个特定信道的邻近接入点的干扰，它就会把流量切换到另一个信道。客户设备就会使用提供最佳信号的那个接入点，不管它是哪一个，这样客户设备要么更换信道，要么连接到另一个接入点，这两种情况都会带来额外时延。
“If you have 20 to 30 clients, you lose much of the wireless LAN’s bandwidth to contention,” Meru’s Anand notes. The popularly deployed 802.11b and 802.11g wireless networks have three nonoverlapping channels, reducing the chances that dense wireless networks can avoid channel-switching. The less-popular 802.11a networks have 12 channels.
Meru公司的Anand特别指出：“如果你有20到30个客户设备，WLAN的带宽大部分会因为争用而浪费。”广泛部署的802.11b和802.11g无线网络有三个非重叠信道，这减小了密集的无线网络可以避免信道切换的可能性（？？？）。不大广泛的802.11a网络则有12个信道。
这句话背后的真正意思是什么呢？是指信道越多越不好？