无从知道

不可能知道[说清]

there's no telling───没什么好说的

there is no call for───没有……的必要；进行批评

there's no mistaking───没有错

there is no comparison───没有可比性

there is no───根本没有

there's no way───无法；不可能

there is no quick fix───没有快速解决办法

there is nothing for it───没什么好做的

the following───下一个的

no knowing what he is doing.───无法知道他在做什么。

There is no knowing what he will think up next.───谁也说不准下一次他又会想出什么花样来.

There is no knowing what may happen tomorrow.───谁也不知道明天将发生什么.

There is no knowing what may happen to them.───我们无法知道他们将发生什麽事.

There is no knowing when we shall meet again.───不知道何时我们再相见.

There is no knowing what the weather will do.───天气会怎样变化无法预料.

There is no knowing when he will come.───无法知道他什么时候来.

There is no knowing how the ancient Egyptians built the pyramids.───不可能知道古代埃及人是如何建造金字塔的.

There is no knowing what may happen if this information gets into the wrong hands.───要是这个情报落到不可靠的人手里,那就不知会发生什么事.

no knowing when he can finish the book.───无法知道他何时才能写完这本书。

There is no knowing but such an accident may happen.───谁能说不会发生这种意外呢?

no knowing what may happen.───没人知道知道会发生什么事。

There is no knowing what he is doing.───无法知道他在做什么.

There is no knowing where she's gone.───无法知道她到哪去了.

When he gets on his feet, there is no knowing when he will sit down again.───一旦起立发言, 就不知什么时候再坐下来.

There is no knowing what has happened.───不知道发生了什么.

There is no knowing where she's gone.

There is no knowing what he will think up next.