face of pulley

例句：

1. 1. The engineerdesigned the machine with the face of thepulley facing upwards for easy adjustment.
   工程师设计的机器，滑轮面朝上，便于调整。
2. 2. The weight of the carwas balanced by the face of the pulley on the other side.
   汽车的重量通过另一边的滑轮平衡。
3. 3. The constructionworker used the face ofthe pulley to lift heavyobjects.
   建筑工人利用滑轮的面来举起重物。