身元

彼（かれ）は身元（みもと）を明（さや）かさなかった。

He didn't reveal his identity.

彼（かれ）の身元（みもと）は腕時計（うでどけい）で確認（かくにん）できた。

They were able to identify him by his wrist watch.

行方不明（ゆくえふめい）だった少年（しょうねん）は服（ふく）で身元（みもと）が確認（かくにん）された。

The identity of the boy who had been missing was verified by the clothes he was wearing.

その犯人（はんにん）は、自分（じぶん）の身元（みもと）を隠（かく）さなければならなかった。

The criminal had to conceal his identity.