Web spiders are like a text-based browser, they can't read the text embedded in the graphic image or Flash.

网络蜘蛛就像一个以文本为基础(text - based)的浏览器，它们无法阅读嵌入图像或Flash中的内容。

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This classic text based browser shows us just the text - just what the search engines crawlers will see.

这款经典的文本浏览器只显示了文本—就是网络蜘蛛所看到的。

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Another change was a spell checker that keeps an eye on every bit of text typed in almost any Firefox browser box be it in a web-based e-mail program or an add-on that lets people post blog updates directly.

BBC: NEWS | Technology | Firefox browser for web 2.0 age

Users send an invite by email or text message, and the invitee taps a button to enter a browser chat, which opens a browser-based chat room on their phone.

FORBES: It's Yet Another Mobile Messenger, Except Chorus.im Wants To Be In Your Browser