pay dirt
US
noun uncountable
■something very valuable or very useful which is found after searching or effort （经搜索或付出努力后所作的）有利发现•If a salesperson does not quickly hit pay dirt with a customer they will usually move straight on to someone else.如果销售员从某个顾客无利可图，他们通常会直接找另外的顾客。 |