長難句：The government is to ban payments to witnesses by newspapers seeking to buy up people involved in prominent cases such as the trial of Rosemary West.

結構剖析：本句的主干是 The government is to ban payments, 介詞結構 to witnesses 和 by newspapers...都作后置定語，修飾 payments; 現在分詞結構 seeking to buy up people...作 newspapers 的后置定語，相當于 which seek to buy up people..., 其中過去分詞結構 involved in prominent cases such as the trial of Rosemary West 又作 people 的定語，相當于 who are involved in prominent cases such as the trial of Rosemary West. 本句的難點在于后置修飾語偏長。

核心詞匯： ban 禁止
involved in 卷入，涉及
witness 證人；v.見證
prominent 突出的，杰出的
trial 審判；試驗

參考譯文：政府要禁止報界付費給證人，因為報界試圖收買諸如露絲瑪麗.韋斯特這類要案中涉及的證人.