there in no telling

• 不可能知道；难以预料

there in no telling的用法和样例：

例句

1. There is no knowing what will happen in the future.
   不可能知道将来发生什么事。
2. As he looked through his dead wife's papers and belongings, he had no feeling towards her memory but one of pity that she had not known the happiness he knew now.
   他在处理亡妻的事务和一些文件的时候，除了惋惜她已经永远不可能知道他现在所知道的幸福之外，对亡妻竟然没有丝毫怀念之情。
3. There is no telling what he may do when he gets angry.
   难以预料他愤怒时会做出什么事。
4. But there is no reason to think the supply of such willing hands will be indefinite.
   但今后是否有足够的劳动力愿意从事这一工作仍难以预料。