First known use of the word email.

email一词开始使用。

youdao

First known use: Noah.

最早使用者：诺亚。

youdao

Vampire: First known use of the word 'vampire' in 1734.

吸血鬼：“吸血鬼”一词的首次使用是在1734年。

youdao

This is the first known use of social media being employed in this manner though, and the growth of individual online presences will only make it easier for the U.S. to do it again.

FORBES: The United States' Social Media Plan to Keep Syria's Chemical Weapons Safe

The Bill, which has been on air for 25 years, is being comprehensively overhauled, including an end to its well-known theme tune and the use of incidental music for the first time.

BBC: Schedule shake-up affects Corrie

This is the second known use of a sapphire in jewellery found in the country, the first being a 5th Century Roman example, said the museum.

BBC: Escrick sapphire ring's mystery history sparks meeting