At the receiving end, another set of laser oscillators can be used to pick up these light signals, reversing the process.
在接收终端，另外一组激光震动器接收这些光信号，进行的是相反的过程。
One product receiving rave reviews is drag draw a light pen and eraser set that lets kids draw whatever they want on the wall via a laser projector.
其中最受好评的是可以让小朋友随意在特制墙面上涂鸦的魔术刷、魔术橡皮擦、魔术棒，以及用一种雷射投影器所组成的涂鸦桶。
One product receiving rave reviews is drag draw a light pen and eraser set that lets kids draw whatever they want on the wall via a laser projector.
其中最受好评的是可以让小朋友随意在特制墙面上涂鸦的魔术刷、魔术橡皮擦、魔术棒，以及用一种雷射投影器所组成的涂鸦桶。
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