spice something up
phrasal verb with spice verb [ T ] uk/spaɪs/ us/spaɪs/
给（演说、故事或表演）增添趣味
to add excitement or interest to a speech, story, or performance
He'd spiced up his speech with a few rude jokes. 他讲了几个粗俗的笑话，让自己的讲话显得更有趣一点。
It was one of those articles on how to spice up your sex life. 那是那种讲述如何给你的性生活增添情趣的文章。