If the line of sight is obstructed, sometimes an alternate path can be established using an intermediate site as a repeater.
如果视距被阻挡，则可利用某一中间地点做为中继站，以建立一条迂回路径。
If the line of sight is obstructed, sometimes an alternate path can be established using an intermediate site as a repeater.
如果视距被阻挡，则可利用某一中间地点做为中继站，以建立一条迂回路径。
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