StumbleUpon is a useful tool that lets you mark websites you like, save information for later and find webpages that other users have marked as interesting.

StumbleUpon是一个有用的工具。你可以标记你喜欢的网站，保存信息，发现其他用户感兴趣的网页。

youdao

One of Mark Poster's important presuppositions is language is not transparent tool of action, the other is that subject is constructed in the actions and structures of interchange.

马克·波斯特有两个重要的理论前提，一是语言并非行动的透明工具，二是主体是在交往行动中和交往结构中被构成的。

youdao

XML certainly is not one kind of mark language, but is one kind of foundation, the design and the use mark language tool collection.

XML并不是一种标记语言，而是一种创建、设计和使用标记语言的工具集。

youdao

Other non-premium updates include a new Stamps tool that'll let you mark a document with symbols to indicate approval, disapproval, a question mark, an exclamation point and (of course) a heart.

ENGADGET

Neither Facebook nor its founder, Mark Zuckerberg, have said much publicly about Facebook's role as a tool for pro-democracy activists in Tunisia or Egypt.

WSJ: Facebook Seeking Friends In Beltway