咱们打开天窗说亮话。

Let's get everything out in the open.

咱们打开天窗说亮话，你怎么看这件事？

Let's call a spade a spade, what do you think of this?

然而管理员却打开天窗说亮话，辩驳他实在是想偷书。

But the librarian, who believed in calling a spade a spade, rebutted that he stole the books.