never know

基本解釋

I never know such a man.
我從不認識這樣一個人。
One of the uncertainties of military duty is that you never know when you might suddenly get posted away.
軍事任務的一個不定因素是，你決不知道什么時候會被突然調(diào)離。
I’d like to hope that but you never know.
我希望如此但你永遠也不知道結果如何。

As long as I paid my medical school fees every year, my family would never know I wasn't attending any classes.
It led to water, ambiguous, universal water, just as 42nd Street in New York leads to water and you never know where you are.
那里通向大海，通向浩瀚無際的大海,就象紐約通向大海的第42街。
耶魯公開課 - 1945年后的美國小說課程節(jié)選
Now we will never know, and don't let anyone ever suggest to you that you will ever know, what Milton could possibly mean by this deliberately perplexing image of the two-handed engine at the door.
我們永遠不會知道,彌爾頓在這句描寫門邊的雙手引擎的,刻意的意象疊加里想要表達什么。
耶魯公開課 - 彌爾頓課程節(jié)選

Because you never know: This might be the year that nature takes a sabbatical.
NPR: Morel Satisfaction: Stalking the Wild Mushroom