但一旦双方住在一起，同当初简单的约会相比，就更难以分开。
But once a couple is living together, it is harder to split up than if they were merely dating.
“销售主持人”这种形式将广告和常规的节目安排以某种方式掺杂在一起，使两者难以被区分开。
Host selling involves blending advertisements with regular programming in a way that makes it difficult to distinguish one from the other.
蒙大拿州的米苏拉就是这类城镇中的一个，但它有某种难以说明的精神，能将它和其他城镇区分开来。
Missoula, Montana, is one of these towns, but it possesses some indefinable spirit that keeps it from being confused with any other.
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