Can you cash this postal order for me now?

你现在能帮我兑现这张邮吗?

It is a bill payable at sight.

那是一张见即付的。

You need an official signature to validate the order.

你要有正式的签字,这张才能生。

"An indorsement in blank specifies no indorsee, and a bill so indorsed ecomes payable to bearer."

无记名背书并不书明被背书，以此方式背书之，应成以持收款之。