Use the style of a business letter.

用商务信件格式。

youdao

Can you write a business letter?

你会写业务信吗？

youdao

He'll teach us how to write a business letter.

他将教我们怎样写一封商业信函。

youdao

"Dear, " which always looked fine atop a business letter, or a handwritten note, is increasingly seen as archaic and old-fashioned on a computer screen or on a smartphone or mobile device.

CNN: Is 'Dear' dead?

To travel undetected in the guise of a standard business letter, the device needed to fit into the most commonly used envelope (a number ten in America, which is about 100mm by 240mm).

ECONOMIST: Monitor

There is just an agreement to pursue increased scheduling of games between the conferences, akin to a non-binding letter of intent in a business joint venture.

FORBES: How The Pac-12 And Big Ten Plan To Change College Sports