在旧伦敦，捉贼人经常获得捕获盗贼的悬赏金。

In old London, ___thief-takers often received rewards for capturing burglars.

当时一些捕盗者通过举报罪犯来获取报酬。

In those days, some ___thief-takers earned money by turning in criminals for rewards.