级别：一级教员
这3个词（短）语都可表示“建立、建设”,其中
build最普通用词,主要指“修建、建筑”,常带house,road,bridge,socialism,hope等；如：
The house is built of wood.这房子是用木头建造的.
establish主要指建立机构、组织或联系,有稳固建成的意思；如：
Our hospital was established in 1950.我们的医院建于一九五○年.
She established her fame as an actress.她已成为大名鼎鼎的演员.
found主要用于创立机构、组织或理论；如：
They founded a college.他们创办了一所大学.
His theory is founded on facts.他的理论建立在事实的基础上.
set up是口语用词,同establish；着重表示开始,草创.如：
A new government was set up after the war.新政府于战后成立