签证机构提醒我：派遣信必须是原始签名文件。的翻译：Visa agencies remind me: sent letter must be an original signature file. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

The certifying authority: to send a letter must be the original signature file.

Visa agencies remind me: sent letter must be an original signature file.

The visa organization reminds me: The dispatch letter must be the primitive signature document.

VISA AGENCY Remind Me: Send letter must be an original signed document.

Visa agencies remind me: sent letter must be an original signature file.