Surfwatch allows parents to prohibit access to specific web sites, newsgroups, and bulletin boards.

过滤器软件可以让父母禁止对特定的网站、新闻组和电子布告栏的访问。

You push it into walls or bulletin boards.

你把它推进墙或者广告板。

Liveboards can also be used as bulletin boards.

现场板也可以被当成布告板来使用。

She has posted photographs on bulletin boards.

她已把照片贴在了公告牌上。

Check your school's bulletin boards or website.

检查学校的公告或网站。