Even though no one had seen them, nor could anyone ever know what time he caught the fish, the boy could tell by his father's voice that the decision couldn't be changed.
2
但沃瑟斯坦是否真正幸福,我无从得知。
But whether Bruce Wasserstein was a truly happy man, I don't know.
3
问题是是他是生还是死我们无从得知他的行踪。
The question is whether he is alive or dead. There is no trace of him.