【俚語】

I'll say! 是啊！的確如此！

【例句】

A: Wow, this bookshop has everything.
哇，這家書店什么都有。
B: I'll say! I didn't even know copies of this book still existed!
是啊！我都不知道這本書的復印本依然還有！

Having said that
盡管如此，話說回來

【例句】

It’s expensive. Having said that, I must admit that it is very well made.
是挺貴的。不過話說回來，我必須得承認做的還是很精良的。

I wouldn't say no. 好的

【例句】

A: Do you want to try that new sushi place for lunch?
午飯你想嘗嘗那家新開的壽司店嗎？
B: I wouldn't say no!
好啊。

Not to say 雖不能說是

【例句】

It is unwise, not to say stupid, to quit your first job after only one month.
第一份工作才干1個月就辭掉，這雖說不上愚蠢，但也是不明智的。

Do you know what I'm saying?
你知道我意思吧？

We're in serious trouble. Do you know what I'm saying?
我們有大麻煩了。你知道我意思吧？！