psychologists approach development, adjustment, and growth from differing perspectives, each of which offers an optimal range of explanations rather than a comprehensive truth.
心理学家们从不同的角度来分析(心理)发育,调整,以及成长,每一种角度都会给予到位的分析和讲解而并不是片面的事实。
comprehensive truth意思是 “全面的事实”。但在这里强调的是explanations rather than plain truth.