be no picnic
US /bi noʊ ˈpɪk.nɪk/
UK /bi noʊ ˈpɪk.nɪk/

1.
不是件輕鬆的事, 很困難
to be a difficult or unpleasant situation or task
:
•
Raising three children on a single income is no picnic.
靠一份收入撫養三個孩子可不是件輕鬆的事。
•
Working in that environment can be no picnic, but someone has to do it.
在那种環境下工作可不是件輕鬆的事,但總得有人去做。