这个机械装置中的凸轮将旋转运动转化为直线运动。

The ___cam in this mechanism converts rotary motion into linear movement.

他用手机摄像头拍下了这个美丽的日落。

He used his phone's ___cam to capture the beautiful sunset.

他们用CAM系统提高了零件加工的精度。

They improved the precision of parts machining with a ___CAM system.