The audio board converts analog sound to digital sound and stores it fur further processing.

声板把模拟声音转换为数码声音，并将其储存起来以被处理。

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Once inside the virtual classroom, they have access to a chat feature, an interactive white board and a video window where they can see and hear the tutor in live video and audio.

一旦进入虚拟课程，他们就可以进入聊天框，一个有互动功能的白板还有一个视频窗口，通过这个视频窗口他们可以看到教师的现场授课。

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There are various different learning tools available for each subject, including board games, audio cassettes and CDs, and activity cards.

该网站的每一个主题都包含了形形色色的学习工具，包括棋盘游戏，录音带和光盘，以及活动卡。

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First of all, you can't overlook the fact that they've moved to a Cortex A8-based OMAP3530, an appreciable boost from the ARM11 core it replaces, but it turns out there are a whole bunch of subtler changes too, like the inclusion of on-board audio out (pictured above toward the left of the base), HD video out capability through a module, and a second microSD slot.

ENGADGET: Bug Labs' BUGbase 2.0 prototype hands-on Hands-on

"We were on board as one of the first publishers that got involved with Audible, when digital distribution of audio was a relatively new concept, " says McGuinn.

CNN: Books on tape, on the Web