01
今日長難句
The 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.
02
詞彙解析
explanatory adj. 解釋性的(常作定語)
item 專案;一則;一件東⻄
observe 觀察
03結構分析
主幹:主語behavioral sciences + 系have been + 表語slow to change
時態:文中兩次出現have been，屬於 be 動詞的現在完成時，譯為:一直、持續
修飾:原因狀語從句partly because，解釋主幹
04
參考譯文
The 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.
行為科學一直髮展緩慢
原因1️⃣解釋性內容，似乎通常源於直接觀察
原因2️⃣其他型別的解釋方法，始終難尋。
