有关《老友记》

you don't say 要给我上下文

hold on camper是等等或着等一下

for all we know跟as we all know 是一样的

blew off是摧毁的意思， 在这里是浪费的意思

你提的问题很有意思 这是英语网站对you don't say的解释
you don't say
How surprising, is that true? Also, I find that hard to believe. For example, I've been working on this project for two years.--You don't say, or The man who runs this soup kitchen is a real saint.--You don't say! This expression, a shortening of you don't say so, may be used straightforwardly or ironically.
也就是 真的吗？或难以置信的意思 语气强时应该也可以翻成闭嘴