customer
/ˈkʌstəmə(r)/noun
1
- a person or organization that buys goods or services from a shop or business顾客; 客户：
Mr Harrison was a regular customer at the Golden Lion
哈里森先生是金狮的常客
as modifier customer service.客户服务。
2
- with adj. a person or thing of a specified kind that one has to deal with（有某种特性的）对象, 家伙：
the fish is a slippery customer and very hard to catch
这条鱼是滑溜的家伙, 很难抓
a tough customer.
强硬的对象。