(1)結(jié)構(gòu)上的變化
例：This seems mostly effectively done by supporting a certain amount of research not related to immediate goals but of possible consequence in the future.
給某些與當(dāng)前目標(biāo)無關(guān)但將來可能產(chǎn)生影響的科研以支持，看來通常能有效地解決這個(gè)問題。
(2)用詞上的變化
例：Interest in historical methods has arisen less through external challenge to the validity of history as an intellectual discipline and more from internal quarrels among historians themselves.
人們之所以關(guān)注歷史研究的方法論，主要是因?yàn)槭穼W(xué)界內(nèi)部意見不一，其次是因?yàn)橥饨绮⒉徽J(rèn)為歷史是一門學(xué)問。
例：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.
行為科學(xué)之所以發(fā)展一直緩慢，部分原因是用來解釋行為的依據(jù)似乎往往是直接觀察到的，部分原因是其他的解釋方式一直難以找到。
