牛津电影里 100%
明摆着的难题;众所周知却避而不谈的事
a problem or question that everyone knows about but does not mention because it is easier not to discuss it
Are we even gonna talk about the elephant in the room?
And it's a bit of an elephant in the room, and I think it's time we discuss it.
释义来自《牛津高阶英汉双解词典》第 9 版