I heard that you get vitamin D from sunshine, and that you soak it like a sponge.
我听说人们像海绵一样从阳光中摄入维生素D。
You mind your business, and I'll mind mine.
井水不犯河水。
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.