there's no knowingNOT KNOWit is impossible to know 无从知道,难以预料 There was no knowing who might have read the letter. 无法知道谁可能已经看过这封信了。
there’s no knowing• If we go there's no knowing.• Otherwise there's no knowing just how many more he would have killed.
→ there’s no knowing at know1(10)