“鞋楦”的英语？

((谚))是鞋匠就该守着鞋楦 ( (人该守本分,不可越俎代庖 ) ).The cobbler should [ Let the cobbler ] stick to his last.补鞋匠只应守鞋楦头,人人各守本业,对别人的事少掺和.Cobbler should stick to his last.胶鞋模具包括鞋模 、 辊筒与鞋楦.Rubber overshoes mould includes canister of shoe mod...