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今日长难句

The考研 behavioral sciences have been slow to change partly because the explanatory items often seem to be directly observed and partly because other kinds of explanations have been hard to find.

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词汇解析

explanatory adj. 解释性的(常作定语)

item 项目;一则;一件东⻄

observe 观察

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主干:主语behavioral sciences + 系have been + 表语slow to change

时态:文中两次出现have been，属于 be 动词的英语救死扶伤现在完成时，译为:一直、长难隐隐约约持续

修饰:原因状语从句partly because，考研左右两难解释主干

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参考译文

The英语贻误军机 behavioral sciences have been slow to change

partly because the explanatory items often seem to be directly observed andpartly because other kinds of explanations have been hard to find.

行为科学一直发展缓慢

原因1️⃣解释性内容，似乎通常源于直接观察

原因2️⃣其他类型的长难斜风细雨解释方法，始终难寻。考研