訳が分らない

(1)incapable of being explained or accounted for; "inexplicable errors"; "left the house at three in the morning for inexplicable reasons"

(2)説明されるか、説明されることが不可能である

(1)inexplicable errors

(2)不可解な誤り

(3)left the house at three in the morning for inexplicable reasons

(4)どういうわけか朝の3時に家を出た