His strange habit makes sense when you consider that he's an environmentalscientist.
当考虑到他是一名环境科学家，他奇怪的习惯就解释得通了。
2
Pay Drechsel, an environmentalscientist, argues that the social and economic benefits of using untreated human waste to grow food outweigh the health risks.
His strange habit makes sense when you consider that he's an environmentalscientist who studies how to reduce litter, including things that fall off garbage trucks as they drive down the road.