1. Before we could replace the power supply, we would have to remove from the telescope a handrail fixed with four screws. 在更换电源之前，我们必须从望远镜上取下一个用四个螺丝固定的扶手。
2. I knew what it meant: The handrail could be completely pulled off and the safety tether might break, and I might therefore be pushed into space. 我知道这意味着什么：扶手可能会被完全扯下来，安全绳可能会断裂，我可能因此被推到太空中去。
3. Then Houston, the control centre on the earth, called up and told me to use the tape to tape the bottom of the handrail and pull it off the telescope. 然后休斯顿，地球上的控制中心，打电话给我，让我用胶带把扶手的底部粘上，然后把它从望远镜上拉下来。
4. The boy slid down the handrail. 那个男孩顺着楼梯扶手滑了下来。
