Most elevators work just like a pul

Most elevators work just like a pulley. A very strong metal rope is joined to the top of the elevator car and goes up through a “sheave” in the engine room above the elevator. The sheave is like a pulley wheel with grooves in it to hold the rope tightly. On the other side of the rope is a weight, which is about as heavy as the elevator car when it is half full. This balances the car, so that not too much energy is needed to move it.

Results (Chinese) 1:

大多数电梯工作就像一个滑轮。很强的金属绳相连的电梯轿厢顶部，通过在机房电梯上方的"滑轮"上升。滑轮是像带槽在它，紧紧地握住绳子的滑轮。绳子的另一边是重量，这是大约重达电梯轿厢，当它是半满。这平衡车，所以，不会有太多的精力需要移动它。

Results (Chinese) 2:

大多数电梯的工作就像一个滑轮。一个非常强的金属绳接合到所述电梯轿厢的顶部，并通过在机房电梯上方的“滑轮”上升。槽轮是像在它紧紧地保持在绳索槽的皮带轮。绳子的另一侧是一个重量，这大约是在电梯轿厢重，当它是半满的。这个平衡的车，以便将其移动到所需不太多的能量。

Results (Chinese) 3:

大多数电梯就像一个滑轮。很强的金属绳连接到电梯轿厢顶上通过“轮”在机房电梯上方。滑轮是滑轮槽中紧紧抓住绳子。绳子的另一边是一个重量，大约是一样重的电梯轿厢时，它是半满的。这平衡了汽车，所以不需要太多的能量来移动它。