The task: make the arm reach out to grasp a ball mounted on a board.
测试任务：伸出手去抓板上的那个球。
2
The board of directors at General Motors made a surprise decision cancelling the planned sale of Opel, the carmaker's European arm, to Magna, a car-parts supplier, and Sberbank, a big Russian bank.
THE arm of a typical industrial robot is a crude-looking but functional implement designed for a single job, such as placing tiny components onto a circuit board or painting a car.