习惯用语make a concession to1.对...让步特殊用法exchange rate treatment and concessions1.汇率上的优惠及其它特殊待遇forest concession1.森林特许权limited concession1.有期让与price concession1.让价tariff concessions1.关税让步［减让］timber concession1.木材租约water concession1.水利权