拉链子

lead当名词有“链子”“皮带”的意思。

可数名词 A dog's lead is a long, thin chain or piece of leather which you attach to the dog's collar so that you can control the dog. 牵狗的皮带; 牵狗的链子

例：

All dogs in public places should be on a lead.

所有的狗在公共场所必须拴上链子。