And therefore we need better ways of separating out the biological type of depression, melancholia, from the other conditions.
所以我们要把生理学抑郁症和其它病症进行区分。
英语百科
Type (biology)
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralize the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen.