advice作“劝告”解时是抽象名词，不可数，表示数的概念时须借助表示单位的名词piece。advice作“消息，报导”解和在商业用语中作“通晓单”解时是可数名词，且常用重数。
相关介绍：
advice例句
Such advice as he was given has proved almost worthless.
他所得到的'那点建议结果证明几乎完全没用。
What advice would you proffer to someone starting up in business?
您对初入商界的人有何建议？
The emergency services were on hand with medical advice.
随时都有急诊服务，并提供医疗咨询。
The company provides advice and assistance in finding work.
公司提供咨询并帮助找工作。
The high price of the service could deter people from seeking advice.
这么高的服务费可能使咨询者望而却步。
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