A "clip show" is an episode of a series that essentially takes a look back at what they've already done. It's a pretty popular trope, since it saves the production a whole bunch of money, since they're looking back on old stuff, and not having to shoot new stuff.
本季《邪惡力量》有非常關(guān)鍵的一集名叫《Clip Show》，這一集我們將會閃回過去。閃回真心是現(xiàn)在電視劇非常喜歡使用的一種省錢制作手法，因為劇組可以直接找以前出演過的演員，不用再找新演員試鏡。

Guest stars Taylor Cole, Graham Wardle, and Cindy Busby, from previous seasons, will all be returning. Fans, of course, remember Cole as Sarah Blake from "Provenance." She was one of Sam's more likeable love interests over the course of the series.
之前曾客串過的演員Taylor Cole、Graham Wardle和Cindy Busby都將會在這一集回歸。大家應該都還記得Cole扮演的Sarah Blake吧。她可以算是Sam在這部劇中人氣比較高的女友了。

Wardle was in the second episode of the first season, as a kid who was nabbed out of his tent by a creepy, people-eating Wendigo. Luckily, Sam and Dean saved him and returned him to his sister safely.
Wardle曾經(jīng)在《邪惡力量》第一季第二集中出現(xiàn)過，他扮演一個被怪物（Wendigo）從帳篷里抓走的孩子，還好最后被Sam和Dean救了回來。