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.

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。

youdao

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.

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。

youdao