动词 exact:

1. claim as due or just

2. take as an undesirable consequence of some event or state of affairs

exactadj.精密严谨的；确切的Exact method精确方法exact figure确切的数字exact amount确切的数量exact number精确的数字exact search全符合检索,精确查找exact result确切结果exacting work艰巨的工作exact sciencen.精密科学exact meaning确切的意义exaction n.强求，强征，杂税；n.；勒索；

1. After running through16,000 possible designs, the electronic computer picked out the plan for the plant that would produce the most chemicals at the lowest cost accompanied by a set of exact specifications.
   在快速处理了16000种可能的设计之后，电子计算机挑选出建一个以最低成本生产最多化学产品的工厂的计划，并附有一份详细说明书。
2. A charge exacted at a restaurant for every bottle of liquor served that was not bought on the premises.
   开瓶费餐馆对顾客在别处所购买的瓶装酒提供服务所收费用
3. Any payment exacted for protection.
   勒索的钱财强逼某人支付的保护费
4. A payment exacted for a special purpose; an impost or a levy.
   税为某一特定目的征收的费用; 税或征税