KNOW somethingused when you are telling someone something that they probably know or expect 不用说,当然
Needless to say, any contributions of money will be gratefully received.
不用说,收到任何一笔捐款我们都将很感激。
Examples from the Corpus
needless to say• There was no bathroom, needless to say.• The armed robber, needless to say, did not stay around to be sued.• Basil, needless to say, has found the butter.• The whole thing, needless to say, is demoralizing.• This kind of banter, needless to say, is not acceptableflirting behavior.• But, needless to say, things can get a little crazy in the 24-hour newsbiz.• Musicalvalue, needless to say, usually ends up being the last thing these folks consider.• Janice, needless to say, was quite unaware of her presence.• Needless to say, we're on a very tightbudget.