foot treadle 脚踏板
treadle machine 踏板式机器
A: How do you operate this antique sewing machine?
A：你如何操作这台古董缝纫机？
B: I use the treadle to power it.
B：我用踏板来带动它运行。
1) 缝纫机或织布机上的脚踏板
2) 用脚踩动机器部件的行为
1. 踏板（尤指缝纫机或织布机的脚踏板）
noun
1. A lever worked by the foot, especially on a sewing machine or a loom.
verb
1. To operate a machine by means of a treadle.