头两个符号是未知的，但商博良知道，在最右边重复出现的象形文字代表“S”的声音。

The first two of these symbols were unknown, but Champollion knew that the repeated hieroglyphs to the far-right symbolized an "S" sound.

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第三个(最右边的)矩形，名为BookRoom，既有人也有插头符号，这就意味着用户执行该活动的一部分，剩余部分由某些自动处理在后端完成。

The third (right-most) rectangle, named BookRoom, has both a human and a plug symbol, which means a user performs part of this activity and the rest is done by some automatic process at the back end.

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