長難句：Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries.

結(jié)構(gòu)剖析：本句的主干是 Comparisons were drawn between ... and ..., 難點(diǎn)在于使用了被動語態(tài)，理解時可以轉(zhuǎn)換成主動語態(tài)： People drew comparisons between ... and ... （人們對.... 與.... 進(jìn)行了一些比較）。

核心詞匯： comparison 比較
diffusion 傳播；擴(kuò)散

參考譯文：人們對20世紀(jì)電視業(yè)的發(fā)展與15、16世紀(jì)印刷術(shù)的傳播進(jìn)行了一些比較。