用pulleys造句子，“pulleys”造句

Last of all to disappear were the sounds of building; the echo of brick on brick and the continual whine of pulleys.

Here is a picture of some pulleys I cast and some pulley patterns I made.

LD wheel, wheel group, drum group, hook group, pulleys, couplings, wire rope, cable pulley, motor, brake, reducer, cable reel, overload limiter, standard parts.