The Maro Polo Effect has been going on for far longer than I ever imagined, and I see no reason to say it won't continue on indefinitely.
马可·波罗现象持续的时间超出了我的想象，而且也没理由不继续下去。
2
When the first Prang raids came from the northwestern area of Fal, the Maro of Rhew was formed as a safe haven from these terrible raiders traveling on winged beasts.
At the same time, the author also discusses the question that the hazard of outburst in colliery is predicted by using the abnormal features of the maro-molecular structure of coal.