The question is whether he is alive or dead. There is no trace of him.

问题是是他是生还是死我们无从得知他的行踪。

youdao

They were presumed dead after search planes found no trace of them.

飞机搜索后没有发现他们的痕迹，他们被推定已经死亡。

youdao

They were presumed dead after search planes found no trace of them.

飞机搜索后没有发现他们的痕迹，他们被推定已经死亡。

youdao