有观点认为，这些基因可以和那些参与寄生虫生活周期的基因连在一起，并使那些基因也能够传播。
The idea is that these genes could be hitched to others that mess with the parasite's life cycle and make those spread as well.
在蒙特利尔有幅图片，内容是：被一根绳子连在一起的一辆福特f - 150和一辆自行车，但是福特卡车却无论如何无法将自行车拖出车槽。
In Montreal they have a picture of a Ford F-150 with a rope connected to a bike, but the truck couldn't get the bike out of the dock.
当一条河在平原地带形成了一个圈圈，侵蚀会造成互相挨得很近的两个河岸最终连在一起，使得河流有一条捷径。
When a river forms a loop on flat terrain, undercutting occurring on the riverbanks closest to each other can eventually connect the Banks, giving the river a shortcut.
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