There is no knowing what will happen in the future. 不可能知道將來發生什麼事。
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. 他在處理亡妻的事務和一些文件的時候，除了惋惜她已經永遠不可能知道他現在所知道的幸福之外，對亡妻竟然沒有絲毫懷念之情。
There is no telling what he may do when he gets angry. 難以預料他憤怒時會做出什麼事。
But there is no reason to think the supply of such willing hands will be indefinite. 但今後是否有足夠的勞動力願意從事這一工作仍難以預料。
