轻而易举，很容易
used to say that something can be done without a lot of difficulty
If we pack tonight, we can leave first thing in the morning - no muss, no fuss. 如果我们今晚收拾行李，明天一早就可以动身，毫不费力。
The whole process only takes half an hour - no muss, no fuss.
No muss, no fuss: it's a very small informal party.
You put all the ingredients in one bowl, give the mixture a stir, and then put it in the oven - no muss, no fuss.
Just spray the cleaner on, and no muss, no fuss - the shower is sparkling in no time.
See also: muss noun