knacker
/ˈnækə(r); `nækɚ/ n
1 person who buys and slaughters useless horses to sell the meat and hides 购买并屠杀无用的马的人（为卖马肉和皮）.
2 person who buys and breaks up old buildings, etc to sell the materials in them 收买并拆除旧建筑物等以售其材料的人.
knacker / ˈnækə(r); `nækɚ/ v [Tn]
(Brit sl 俚) exhaust (sb); wear out 使（某人）筋疲力尽
All this hard work is knackering me. 所有这些艰巨的工作把我累得筋疲力尽.