英语翻译"I don't need to tell this graduating class what it's li

英语翻译
"I don't need to tell this graduating class what it's like to know that your job might be next because,up until a few weeks ago,that is precisely the future that this class faced,a future that millions of Americans still face right now," he said.
这句句子有一点地方不是很理解
"I don't need to tell this graduating class what it's like to know that your job might be next because,
这里有what引导 还有that从句 帮我分析下这句长句的结构 还有具体的意思
请把那一句翻译一下好吗?自己翻译了 但是非常不顺...
特别是这里卡住了 it's like to know...
这个know的主语是谁?