直到现在，在如此大的黑色洞附近的一个磁盘片中以星的运动或瓦斯的观察为基础的方法被用。
Until now, methods based on observations of the motions of stars or of gas in a disk near such large black holes had been used.
于是，我又问上帝，为什么要给我两个盒子，为什么一个是金色的，一个是黑色带洞的。
”I asked God, why he gave me the boxes, why the gold, and the black with the hole?
该光敏三极管是通过安装在洞上方的情况下，密封在一个黄铜管，这是手绘的黑色内。
The phototransistor was installed through holes in the top of the case, and enclosed in a brass tube that was painted black inside and out.
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