Before the laser, scientists developed a similar device: a maser which stands for Microwave Amplification by Stimulated Emission of Radiation.

VOA: special.2010.09.01

In the very red means in that part of the brain is stimulated by the centre of your visual field.

红色部分说明这部分的大脑,收到视野中心的刺激。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

And bathing inside the inner ear fluids where they become stimulated by sound waves and acceleration forces.

毛细胞悬浮在内耳液中,接受声波和其它外力的刺激。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Neurotransmitter release is stimulated by the electrical activity that reaches the end of the axon.

到达轴突末梢的电流变化,刺激了神经递质的释放

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