“演说者”的英语可以翻译为：declaimer，orator ...

演说者讲了一连串的笑话。The speaker strung together a series of jokes.那演说者同时得到喝彩声和嘘声.The speaker was received with a mixture of applause and hisses.愤怒的人群把演说者赶下了台.The angry crowd howled the speaker off the platform....