它控制交通灯，确保获得进出体育场馆的人群安全。
It controls the traffic lights and ensures the safety of the people getting in and out of the stadium.
它控制交通灯，确保获得进出体育场馆的人群安全，为我们的眼镜镜片设计。
It controls traffic lights, gets crowds safely into and out of sports stadiums, designs the lenses in our spectacles.
它控制交通灯，确保获得进出体育场馆的人群安全，为我们的眼镜镜片设计。
It controls traffic lights, gets crowds safely into and out of sports stadiums, designs the lenses in our spectacles.
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