若上述全部接地接脚都连至一个地平面，我们会遇到接地弹跳(ground bouncing)。虽然很小，但电路中的感应点(如借以获得反馈电压的电阻分压器)将不会有稳定的参考接地。
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Ground Bouncing Noise 电源线噪声
It felt like your head was a barn, and a big wind was blowing in one ear and bouncing around the walls and then turning into a pitch and then into overtones and then slowly falling to the ground.
那种感觉就好像你的头颅是一座谷仓，有一阵风吹进耳朵，不断在仓间弹射，尔后成为定调，继而是泛音，最后慢慢掉在地板上。
Visualize their negative words and actions bouncing off this wall like arrows on a stone fortress. They simply fall to the ground.
把他们负面的言辞和行为想象成射在铜墙铁壁上的箭。
The second type is on the ground floor and tub edge, feet bouncing back and forth.
第二式则在地下及浴缸边，双脚来回弹跳。
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