Today, tall blocks of flats couldn't exist without them. And you're right, Rob, there's more to lifts than meets the eye.

今天，如果没有电梯的话就不可能有一幢幢高大的公寓楼。另外，你说得对罗伯，除了我们眼睛能看到的这些，电梯还有更深的学问。