Definition
Used to indicate that something is impossible to know or predict with certainty.
難以預料
The weather is so unpredictable; there's no knowing whether it will rain tomorrow.
天氣如此多變，無法得知明天是否會下雨。
There's no knowing how this project will turn out.
無法預料這個專案會如何發展。
I haven't seen him since he moved away, there's no knowing where he is now.
自從他搬走後我就沒見過他，現在無法得知他在哪裡。