想請問一下, 對話中常常通聽到 let's call it what it is 是什麼意思?

“Let's call a spade a spade.”, equivalently to “Let's call it what it is.” in meaning, is a figurative expression which refers to calling something "as it is", that is, by its right or proper name, without "beating about the bush"—being outspoken about it, truthfully, frankly, and directly, even to the point of being blunt or rude, and even if the subject is considered coarse, impolite, or unpleasant.

let's call it what it is = 它是什麼，我們就把它稱作什麼，不做作，不委婉，就直接明瞭的說