[译] 他错拿了另一个人的词典。
[误] He took someone else's dictionary by error.

[正] He took someone else's dictionary in error.
[正] He took someone else's dictionary by mistake.
[注] 由于受 by mistake（错误地）这一用法影响，同样也说 by error，这是不正确的，应该说 in error，其意思和 by mistake相同。