smooth-section sickle

例句：

1. 1. The engineer used a smooth-section to cut through the rock.
   工程师使用一个平滑截面来切穿岩石。
2. 2.The construction crew was tasked with smoothing the section of the road for the next day's work.
   施工队伍被指派负责平整道路的截面，以便第二天的工作。
3. 3. The doctor advised the patient to use a smooth-section to treat his condition.
   医生建议病人使用一种平滑截面来治疗他的病情。