该专利还显示，无人驾驶汽车可能会安装电子眼或机械手臂，知会行人汽车已经“看见”他们了。

The arm could mimic that of a humans, as it ‘sweeps’ for pedestrians to cross, but the message could come across unclear when it’s coming from a robot and not a real person.

机械手臂可以模仿人的动作，向过马路的行人“挥手”。但由于这个动作并不是出自真人，所以很有可能让行人一头雾水。

Currently, no sketches have been released of how the system would work or look, but it appears to be similar to a system Nissan showed off last month.

目前为止，谷歌尚未公布该系统的运行细节或具体样子。但外界认为，该系统很有可能与尼桑上个月展出的一个相关系统类似。

However, Google applied for their patent back in 2012.

不过，谷歌早在2012年就申请了该专利。

For Nissan’s futuristic vehicles, it envisions an outward-facing display in side of the windshield that tells pedestrians when the car is about to stop or if it wants someone to cross ahead of it.

在尼桑的这一未来汽车构想中，挡风玻璃有朝外的显示屏，告知行人汽车将要停下，或是让前方行人先行。

In the company’s video, it shows a driver pushing a button and the steering wheel unravels then recedes back into the dashboard.

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