通过一个机器臂获取动力学数据，记录每种应力条件下膝关节的位置。
Kinematic data were obtained by using a robotic arm to record the position of the knees for each loading condition.
这种机器有一个操作臂，其中包括了钻头和开掘工具，使得机器人可以从深海海底回收岩石样品。
It has a manipulator hand containing drilling and cutting tools that allow the robot to retrieve samples of rock from the ocean bed.
这有一个很好的理由：一个笨重而无判断力的机器臂从一个地方移动到另一个地方，可以不经意间杀掉任何在其移动路径上的人。
This is for a good reason: a heavy, blind robot arm swinging heedlessly from one position to another could kill anyone in its path.
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