棘手的問題;難題;麻煩事
牛津電影裡 100%
if you open up a can of worms, you start doing sth that will cause a lot of problems and be very difficult
I was attempting to give them Eltenton without opening a can of worms.
釋義來自《牛津高階英漢雙解詞典》第 9 版