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.A set of scary steps I climbed down with no handrail and uneven steps!
我以没有栏干和不平顺的步骤爬下的一系列容易受惊的步骤!
3.Now he's doing stairs again with some confidence, as long as he has a handrail.
现在,他再次做楼梯的一些信心,只要他有一个扶手。