在英语里，如果你认为某件事情或某个形势是 black and white 意思就是你觉得看得很清楚，立场很坚定，但其他人可能会从全局考虑从而会有不同看法。

例句

I'm telling you the situation is black and white – we've got no money left!

Other people have opinions, too – it's not all black and white, you know.

She had such a black and white view of the project that she wasn't prepared to discuss any other ideas.

请注意

短语 grey area 灰色地带' 可以用来形容模糊不清的形势，这与 black and white 黑白分明' 所表达的意思正好相反。

I know a little bit about biology and chemistry, but physics is still a grey area for me.

She's got a date for the wedding, but the venue and church is a bit of a grey area.