No carrier will reveal how much of their backhaul is actually fiber for competitive reasons.
由于竞争的关系，没有一家运营商愿意透露他们有多少回程使用了光缆。Ancient Egyptians believed the sun crossed the sky in a "day boat" , and switched to a "night boat" for the return trip.
古埃及人认为，太阳越过天空在“天船”，并切换到“夜船”的回程。For years, this sort of backhaul has mostly come from incumbent telcos offering expensive, symmetrical dedicated lines to the tower site.
多年来，这种回程大多来自主导电信公司提供昂贵的，对称的专用线路的大楼上。On our way back to her car and my bike, she told me with a laugh that the farmer's market wasn't as scary as she thought.
在回程的路上，她告诉我农贸市场并没有她最初想的那样可怕。Meet a sliced, diced, beaten and reconstituted company that seems to be on a rocket ride back.
让我们来看看一个分割的重构的公司，公司看上去就是坐在回程的火箭上。An English traveller found himself in a northern European country with only a little money to buy the ticket for his travel back home.
一位在北欧国家的英国旅客发现自己身上的一点钱仅仅能够买他回程的船票。A university student said, "My university arranged our trip back home for vacation. The tickets were easy to get. "
一个大学生说：“我的大学已经安排我们假期回程了，车票很好买。”It's true that the return home effect is just an illusion, and a better understanding of it might make it go away.
可以确定回程效应仅仅是一个错觉，最好明白这一点然后打破它。Please note that Single-ride ticket or validated Octopus cannot be used for return journeys , or repeated stops.
单程车票或已确认之八达通卡，只可以作单一方向乘车，不可以作回程，或重覆车站使用。