Do you have any friends in the import or export field?
你有在进出口领域工作的朋友吗?
Does he go out with the boy whose aunt is an operator?
与他在一起那男孩的姑妈是接线生。
In the first place, any scientific study requires that there be no preferential weighting of one or another of the items in the series it selects for its consideration.