然后，在细钢棍的两端，各固定一个小的金属球。
Then he fastened a small metallic ball on each end of the steel bar.
迈克坐在囚房，一个狱警走过来用一张监狱工厂的工作卡敲击钢棍，迈克露出了笑容。
Michael is in his cell. A C. O. walks up and taps on the bars with a P. I. work card. Michael smiles.
这样一来，地球引力对钢棍的作用就互相抵消，这是必然的。而且，由于两端重量相等，所以它能够保持稳定。
By this the attractive force of the earth was not suspended, it is true; but it was balanced by the equality of the weights.
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