This cut of beef needs to be slow-roasted in the oven for four hours to become tender and juicy.

slow-roasted 是由形容词 slow（慢的）和动词 roast（烤）组合而成的复合动词，加上 -ed 表示过去分词形式。slow-roasted 指"用慢火长时间烤制"的烹饪方式。